Use sanitizeFilepath when logging Sentry breadcrumbs

[derekblank]

Related to #78 and https://github.com/Automattic/dotcom-forge/issues/6701
While reviewing Sentry logs, I noted that there is an additional place where filepaths need to be redacted.

Proposed Changes

Adds to the behavior introduced in #78 that sanitizes userpaths in console.log statements. This pr adds the same sanitizeUserpath util to filepath values when logging Sentry breadcrumbs, too.

Testing Instructions

When running locally, log out the value of sanitizeUserpath when Sentry.addBreadcrumb is logged during user data loading:

studio/src/storage/user-data.ts

Lines 45 to 52 in 4d584ad

	if ( err instanceof SyntaxError ) {
	Sentry.addBreadcrumb( {
	data: {
	fileContents: sanitizeUnstructuredData( asString ),
	filePath: sanitizeUserpath( filePath ),
	},
	} );
	}

The value of filepaths should appear as [REDACTED]. Example error session where console.log events are using sanitizeUserpath, and Sentry.addBreadcrumb events are not (marked "generic" in the event logs).

Pre-merge Checklist

• Have you checked for TypeScript, React or other console errors?

[dcalhoun]

The logged values were now redacted in my testing. Thanks!