Issue Summary

When a user attempts to approve Jira Cloud's OAuth access request to Bitbucket while using the dark theme in Bitbucket Server, the authorization overlay/modal is not usable. The "Allow" and "Deny" buttons are either obscured, unclickable, or visually broken due to the dark theme styling conflicting with the OAuth consent page.

Steps to Reproduce

Step 1: Enable dark theme in Bitbucket Server

Step 2: Initiate the Jira Cloud ↔ Bitbucket integration (DVCS connector setup)

Step 3: When redirected to the Bitbucket OAuth authorization page ("Welcome to Bitbucket" — requesting read/write access for JIRA), observe the overlay

Expected Results

The OAuth authorization overlay should render correctly with "Allow" and "Deny" buttons fully visible and clickable regardless of the active theme.

Actual Results

The overlay/modal is broken under dark theme — the consent buttons are blocked or not interactable due t color/contrast issue with the Jira Cloud overlay layer. 

Workaround

Switch Bitbucket Server to the light/white theme before performing the OAuth authorization, then switch back after approval.