Fix GitHub OAuth label from App ID to Client ID

[swetalin-10]

Fixes #11875

Updated the GitHub OAuth label from "App ID" to "Client ID" to match GitHub terminology and improve clarity.
Other providers remain unchanged.

[greptile-apps]

Greptile Summary

This PR renames the "App ID" label to "Client ID" for GitHub and GitHub Enterprise OAuth providers in mainOAuth.svelte to match GitHub's official terminology. The change is minimal and correct, also picking up githubenterprise alongside github.

Confidence Score: 5/5

• Safe to merge — the change is a label-only fix with no logic or runtime impact.
• All findings are P2 style suggestions (restoring the type import modifier, and optionally renaming "App Secret" → "Client Secret" for GitHub). Neither blocks merge.
• No files require special attention.

Important Files Changed

Filename	Overview
src/routes/(console)/project-[region]-[project]/auth/(providers)/mainOAuth.svelte	Label for the App ID field updated to "Client ID" for github and githubenterprise providers; type modifier dropped from the Provider import (P2 style). The parallel "App Secret" label was not updated to match GitHub's "Client Secret" terminology.

_{Reviews (2): Last reviewed commit: "fix: handle GitHub Enterprise OAuth labe..." | Re-trigger Greptile}