chore: cherry-pick eshe specific customizations to sumac.3

[kaustavb12]

Description

The PR:

1. Cherry-picks eshe specific customizations on to sumac.3 from eSHE's sumac.2 branch. More details below.
2. Backports a bug fix from upstream.

Here's a list of code drifts and their status:

Commit	Cherry Picked	Comments
chore: remove client's oauth credentials from public repo	❌	Not required anymore. Configs moved to android-app-config
chore: bump github upload-artifact action to v4	❌	Not required anymore. Upstream fixed it via PR#401
fixup! fix: downloaded videos were not working due to gating API needing online access	✅
fix: downloaded videos were not working due to gating API needing online access	✅
fix: Make SSO login use JWT for better compatibility	❌	Upstreamed - PR#371
feat: "Go To Prerequisite Section" button and previews	✅
feat: add "Gated" UI state for subsections	✅
feat: add flag to remove registration from app (#9)	❌	Upstreamed - PR#387
fix: making imageUrl independent of API_HOST_URL formatting	❌	Not required anymore. Upstream fixed it via PR#346
fix: Support pull to refresh for empty dashboard	❌	Upstreamed - PR#375
chore: configure for app to connect to dev instance	❌	Not required anymore. Configs moved to android-app-config
feat: Adding the course number and course effort on the course cards	❌	UI Layout changed. Need to speak to eSHE about reimplementing this
fix: Fixing config file to correctly parse the API_HOST_URL	❌	Not required anymore. Configs moved to android-app-config
feat: Support for login and registration via a browser custom tab	❌	Upstreamed - PR#371
feat: hide some options for the MVP	✅

Other information

Private Ref : BB-9799
Companion PR : android-app-config#6

[viadanna]

Approved 👍

• I tested this on my Android device.
• I read through the code.