fix RedGifs API for rif is fun

[ricardoV94]

Disclaimer: bot generated. I didn't open an issue because I had the fix already on my end. Take it or leave it :)

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Adds a Fix Redgifs API patch for rif is fun (com.andrewshu.android.reddit / redditdonation), which currently has no RedGifs support in patcheddit.

Problem

RIF authenticates to RedGifs by requesting https://api.redgifs.com/v2/oauth/client, which RedGifs removed. RIF never obtains a token, so all RedGifs media fails to load.

Approach

Unlike Boost/BaconReader/Sync, RIF ships a fully R8-minified OkHttp (OkHttpClient is okhttp3.a0, etc.), so the shared BaseOkHttpRequestHook/interceptor path can't be linked against it. Instead, this hooks RIF's token-fetch method (located via the dead /v2/oauth/client string) and returns a valid RedGifs temporary token from the existing shared RedgifsTokenManager, which uses HttpURLConnection and has no OkHttp dependency. RIF's own Authorization: Bearer logic then works unchanged.

The RedGifs user agent is RIF's hardcoded default (org.quantumbadger.redreader/1.25.1), which RedGifs binds the token to.

Testing

• Verified end-to-end on the v1.4.0 release base: built the bundle, patched a clean RIF 5.6.22 with the full patch set, confirmed the injected bytecode returns the extension token and the dead /v2/oauth/client path is bypassed, and confirmed RedGifs plays on-device.
• Verified the RedGifs token flow live: temporary token → Bearer → /v2/gifs/<id> → 200 + media URLs.
• Ported to dev's current conventions (AppCompatibility.RedditIsFun, ExtensionPatches.RIF, object … : Fingerprint); the redditisfun extension module compiles against dev. I couldn't run a full dev build locally because dev's ExtensionPatches.kt requires a newer app.morphe.patches plugin than the published 1.3.2 (unrelated to this change) — the CI build will be authoritative.