fix(imap): oauth2 url fix for outlook (#1701)

## What?

- Added try-catch block to make it easier to debug OAuth2 errors
encountered while authenticating IMAP.
- Revised Outlook URL generation code for updated Entra ID redirect

## Why?

I wasn't able to authenticate my Outlook emails previously. I'm not
fully sure if the documentation clearly states that you need your Entra
ID redirect to be configured as "Web" rather than "Mobile & Desktop
App," but that is also a needed fix.

Author: 1unarzDev

config/oauth_script.py

@@ -57,8 +57,8 @@
         "token_endpoint": "https://login.microsoftonline.com/common/oauth2/v2.0/token",
         "revoke_endpoint": None,  # Microsoft does not support token revocation via endpoint
         "scopes": [
-            "https://outlook.office365.com/IMAP.AccessAsUser.All",
-            "https://outlook.office365.com/SMTP.Send",
+            "https://outlook.office.com/IMAP.AccessAsUser.All",
+            "https://outlook.office.com/SMTP.Send",
             "offline_access",
         ],
         "extra_auth_params": {
@@ -171,8 +171,14 @@ def exchange_code(code, client_id, client_secret, provider):
     req = urllib.request.Request(cfg["token_endpoint"], data=data, method="POST")
     req.add_header("Content-Type", "application/x-www-form-urlencoded")
 
-    with urllib.request.urlopen(req) as resp:
-        return json.loads(resp.read().decode())
+    try:
+        with urllib.request.urlopen(req) as resp:
+            return json.loads(resp.read().decode())
+    except urllib.error.HTTPError as e:
+        body = e.read().decode()
+        print(f"Token exchange failed (HTTP {e.code}):", file=sys.stderr)
+        print(body, file=sys.stderr)
+        sys.exit(1)
 
 
 def refresh_access_token(refresh_token, client_id, client_secret, provider):