fix: catch all requests exceptions in get_index to prevent unhandled NameResolutionError (closes #33691)

[MORDEHAI BOTBIKA (botbikamordehai2-sketch)]

What

The az find command crashes with an unhandled NameResolutionError when DNS resolution fails for the extension index endpoint (e.g., app.aladdin.microsoft.com returns NXDOMAIN). The exception is not caught by the existing except clause, causing a Python traceback instead of a user-friendly error.

Fix

Replace (requests.exceptions.ConnectionError, requests.exceptions.HTTPError, ValueError) with (requests.exceptions.RequestException, ValueError) in the get_index() function. RequestException is the base class for all exceptions raised by the requests library, including DNS resolution failures, connection errors, timeouts, and HTTP errors. This ensures any network-related error is caught and converted to a CLIError with a clear message.

Closes #33691

[azure-client-tools-bot-prd]

Hi MORDEHAI BOTBIKA (@botbikamordehai2-sketch),
Usually we only allow pull requests to be submitted to the dev branch, please double check your pull request target branch main.

[azure-client-tools-bot-prd]

Hi MORDEHAI BOTBIKA (@botbikamordehai2-sketch),
Since the current milestone time is less than 7 days, this pr will be reviewed in the next milestone.

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[Yong Zhang (yonzhan)]

az find

[Ethan Yang (necusjz)]

MORDEHAI BOTBIKA (@botbikamordehai2-sketch) thanks for your contribuation! however, it's covered by #33491 with a new backend service (will release in the next comming azure-cli version).

duplicated

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Live test skipped

⏭️ Skipping the live test for this revision because no new test file was added (tests/**/test_*.py).

The live-test pipeline runs only the test files a PR changes, so there is nothing to execute for this commit. This is informational — a regression test is encouraged where it makes sense, but not required. If a test file is added in a later commit, the live test will run automatically.

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CI Review Summary

All checks are green for this PR. ✅

• CI: 1/1 checks passed
• Live test: not applicable (no runnable test file changes detected)

No issues found. Ready for maintainer review/merge.

[Aditya Pujara (a0x1ab)]

MORDEHAI BOTBIKA (MORDEHAI BOTBIKA (@botbikamordehai2-sketch)) thanks for your contribuation! however, it's covered by #33491 with a new backend service (will release in the next comming azure-cli version).

MORDEHAI BOTBIKA (@botbikamordehai2-sketch) Based on this and PR #33491, closing out this PR as a duplicate solution