Use JWT token for user id

[tyaginidhi]

This pull request primarily focuses on improving the way user IDs are obtained from session tokens across various files. The changes replace the previous method of extracting the user ID from the session.account.id field with a new function getOIDFromToken. This function uses the jwt-decode library to decode the session access token and extract the user ID. This change is applied consistently across multiple authentication functions in the AuthenticationProvider.ts file and in the PowerPagesCopilot.ts file.

Additionally, a new telemetry event VSCODE_EXTENSION_DECODE_JWT_TOKEN_FAILED is introduced to capture any errors that occur during the decoding process.

Here are the key changes:

• src/common/copilot/PowerPagesCopilot.ts: Imported the getOIDFromToken function and replaced the previous method of obtaining the user ID from the session.account.id field. [1] [2]
• src/common/services/AuthenticationProvider.ts: Imported jwt-decode library and defined the getOIDFromToken function. Replaced the previous method of obtaining the user ID in multiple authentication functions (intelligenceAPIAuthentication, dataverseAuthentication, graphClientAuthentication, bapServiceAuthentication). Added telemetry event for failed token decoding. [1] [2] [3] [4] [5] [6]
• src/common/services/TelemetryConstants.ts: Added a constant for the new telemetry event VSCODE_EXTENSION_DECODE_JWT_TOKEN_FAILED.