Make the Adoptopenjdk package type look at the Temurin repo first for latest assets (#522)

* Make the Adoptopenjdk package type look at the Temurin repo first for latest assets

* Address Copilot code review comments

- Use strict equality (===, !==) instead of loose equality (==, !=) for all comparisons
- Properly handle caught errors with instanceof type narrowing before accessing properties
- Only fall back to legacy AdoptOpenJDK for specific version-not-found errors
- Rethrow unexpected errors to avoid masking real issues (network failures, rate limits, etc.)
- Fix error message check to match actual error text ('No matching version found')
- Remove unnecessary undefined check since method return type is never undefined
- Add @internal JSDoc annotation to TemurinDistribution.findPackageForDownload()
- Update tests to properly mock Temurin lookup failures for fallback behavior testing
- Rebuild dist files

* Always fall back to legacy AdoptOpenJDK but log all Temurin failures

- Change error handling to gracefully fall back for all errors, not just version-not-found
- Log version-not-found errors as notices with migration guidance
- Log other Temurin failures as debug messages for troubleshooting
- Improves resilience: users always get a result even if Temurin API has issues
- Maintains visibility: failures are still logged for debugging

* Fixes from review

* Fixes from review

* Fixes from review

* Regenerate dist

__tests__/distributors/adopt-installer.test.ts

@@ -4,6 +4,7 @@ import {
   AdoptDistribution,
   AdoptImplementation
 } from '../../src/distributions/adopt/installer';
+import {TemurinDistribution} from '../../src/distributions/temurin/installer';
 import {JavaInstallerOptions} from '../../src/distributions/base-models';
 
 import os from 'os';
@@ -256,6 +257,38 @@ describe('getAvailableVersions', () => {
 });
 
 describe('findPackageForDownload', () => {
+  it('returns Temurin result and does not query Adopt API when Temurin succeeds', async () => {
+    const temurinRelease = {
+      version: '11.0.31+11',
+      url: 'https://example.test/temurin-11.tar.gz'
+    };
+    const temurinFindPackageForDownload = jest
+      .fn()
+      .mockResolvedValue(temurinRelease);
+    const temurinDistribution = {
+      findPackageForDownload: temurinFindPackageForDownload
+    } as unknown as TemurinDistribution;
+
+    const distribution = new AdoptDistribution(
+      {
+        version: '11',
+        architecture: 'x64',
+        packageType: 'jdk',
+        checkLatest: false
+      },
+      AdoptImplementation.Hotspot,
+      temurinDistribution
+    );
+    const adoptLookupSpy = jest.fn();
+    distribution['getAvailableVersions'] = adoptLookupSpy;
+
+    const resolvedVersion = await distribution['findPackageForDownload']('11');
+
+    expect(resolvedVersion).toEqual(temurinRelease);
+    expect(temurinFindPackageForDownload).toHaveBeenCalledWith('11');
+    expect(adoptLookupSpy).not.toHaveBeenCalled();
+  });
+
   it.each([
     ['9', '9.0.7+10'],
     ['15', '15.0.2+7'],
@@ -278,6 +311,11 @@ describe('findPackageForDownload', () => {
       },
       AdoptImplementation.Hotspot
     );
+    // Mock Temurin to fail so fallback to AdoptOpenJDK is tested
+    distribution['temurinDistribution']!['findPackageForDownload'] =
+      async () => {
+        throw new Error('No matching version found for SemVer');
+      };
     distribution['getAvailableVersions'] = async () => manifestData as any;
     const resolvedVersion = await distribution['findPackageForDownload'](input);
     expect(resolvedVersion.version).toBe(expected);
@@ -293,6 +331,11 @@ describe('findPackageForDownload', () => {
       },
       AdoptImplementation.Hotspot
     );
+    // Mock Temurin to fail so fallback to AdoptOpenJDK is tested
+    distribution['temurinDistribution']!['findPackageForDownload'] =
+      async () => {
+        throw new Error('No matching version found for SemVer');
+      };
     distribution['getAvailableVersions'] = async () => manifestData as any;
     await expect(
       distribution['findPackageForDownload']('9.0.8')
@@ -309,6 +352,11 @@ describe('findPackageForDownload', () => {
       },
       AdoptImplementation.Hotspot
     );
+    // Mock Temurin to fail so fallback to AdoptOpenJDK is tested
+    distribution['temurinDistribution']!['findPackageForDownload'] =
+      async () => {
+        throw new Error('No matching version found for SemVer');
+      };
     distribution['getAvailableVersions'] = async () => manifestData as any;
     await expect(distribution['findPackageForDownload']('7.x')).rejects.toThrow(
       /No matching version found for SemVer */
@@ -325,6 +373,11 @@ describe('findPackageForDownload', () => {
       },
       AdoptImplementation.Hotspot
     );
+    // Mock Temurin to fail so fallback to AdoptOpenJDK is tested
+    distribution['temurinDistribution']!['findPackageForDownload'] =
+      async () => {
+        throw new Error('No matching version found for SemVer');
+      };
     distribution['getAvailableVersions'] = async () => [];
     await expect(distribution['findPackageForDownload']('11')).rejects.toThrow(
       /No matching version found for SemVer */