[Storage] Fixed live tests relating to File Share

[weirongw23-msft]

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[Copilot]

Pull request overview

This PR fixes a few File Share live tests in azure-storage-file-share that were flaky or non-deterministic when run against a real storage account containing pre-existing shares. The list-shares tests previously assumed the account had only the shares created by the test; the fixes scope assertions to the specific share(s) under test.

Changes:

• Filter list_shares() results by the test's own share name in test_list_shares_leased_share (sync and async) and tighten the count assertion from >= 1 to == 1.
• Remove a redundant share_names.sort() (commented-out in the sync test, active in the async test) in test_list_shares_with_num_results_and_marker, since the share names are already created in sorted order.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
sdk/storage/azure-storage-file-share/tests/test_share.py	Scopes the leased-share list assertion to the test's share and removes a redundant commented-out sort.
sdk/storage/azure-storage-file-share/tests/test_share_async.py	Mirrors the sync change: filters listed shares by name with == 1 assertion and drops the now-unnecessary share_names.sort().