[native] Avoid stale pasted image reuse

Summary:
Replace hash-derived clipboard image paste temp filenames with UUID filenames, and always write the current paste bytes to disk. This avoids reusing a stale temp file when NSData hash collides across image payloads.

Test Plan:
yarn cleaninstall
yarn patch-package react-native --use-yarn
git apply --check --whitespace=nowarn over a pristine temporary react-native@0.80.1 package
git diff --check

[web][keyserver] codeVersion -> 218

[web][keyserver] codeVersion -> 217

[yarn] Tighten Windows postinstall guard

[native] codeVersion -> 570

[native] codeVersion -> 569

[web][keyserver] codeVersion -> 218

[web][keyserver] codeVersion -> 217

[native] Standardize full-screen media controls

[native] Remove full-screen media action labels