fix: Hard fail if the secret is not a string

[andrewnester]

Changes

Hard fail if the secret is not a string

Tests

Existing tests pass

[eng-dev-ecosystem-bot]

Integration test report

Commit: ac36b76

Run: 31386223681

	Env	🔄​flaky	💚​RECOVERED	🙈​SKIP	✅​pass	🙈​skip	Time
💚​	aws linux		4	4	294	1122	10:12
💚​	aws windows		4	4	296	1120	7:45
💚​	azure linux		4	4	293	1122	11:13
💚​	azure windows		4	4	295	1120	7:29
💚​	gcp linux		1	5	294	1122	10:17
🔄​	gcp windows	1	1	5	295	1120	10:12

9 interesting tests: 4 RECOVERED, 4 SKIP, 1 flaky

	Test Name	aws linux	aws windows	azure linux	azure windows	gcp linux	gcp windows
💚​	TestAccept	💚​R	💚​R	💚​R	💚​R	💚​R	💚​R
🙈​	TestAccept/bundle/invariant/no_drift	🙈​S	🙈​S	🙈​S	🙈​S	🙈​S	🙈​S
🙈​	TestAccept/bundle/resources/vector_search_endpoints/drift/recreated_same_name	🙈​S	🙈​S	🙈​S	🙈​S	🙈​S	🙈​S
🙈​	TestAccept/bundle/resources/vector_search_indexes/recreate/embedding_dimension	🙈​S	🙈​S	🙈​S	🙈​S	🙈​S	🙈​S
🙈​	TestAccept/ssh/connection	🙈​S	🙈​S	🙈​S	🙈​S	🙈​S	🙈​S
🔄​	TestSyncNestedFolderDoesntFailOnNonEmptyDirectory	✅​p	✅​p	✅​p	✅​p	✅​p	🔄​f
💚​	TestFetchRepositoryInfoAPI_FromRepo	💚​R	💚​R	💚​R	💚​R	🙈​S	🙈​S
💚​	TestFetchRepositoryInfoAPI_FromRepo/root	💚​R	💚​R	💚​R	💚​R
💚​	TestFetchRepositoryInfoAPI_FromRepo/subdir	💚​R	💚​R	💚​R	💚​R

Top 14 slowest tests (at least 2 minutes):

duration	env	testname
4:20	gcp windows	TestAccept
4:18	azure windows	TestAccept
3:28	aws windows	TestAccept
3:12	gcp linux	TestImportDirWithOverwriteFlag
2:57	azure linux	TestImportDir
2:34	gcp windows	TestLock
2:22	azure windows	TestFilerWorkspaceFilesExtensionsRead
2:18	azure linux	TestFilerWorkspaceFilesExtensionsStat
2:17	azure linux	TestFilerWorkspaceFilesExtensionsReadDir
2:14	aws windows	TestFilerWorkspaceFilesExtensionsStat
2:12	aws linux	TestFilerWorkspaceFilesExtensionsReadDir
2:08	gcp linux	TestFilerRecursiveDelete/workspace_files
2:08	azure windows	TestFilerWorkspaceFilesExtensionsReadDir
2:07	gcp windows	TestSyncFullFileSync

[pietern]

I recommend keeping this. The guard above only checks if the key exists or not. It doesn't exist because of normalization. If we ever change that, this statement will hard panic.