Fix Flow Types for weakObjectWrapper Functions #7049

Job	Run time
JS Lint	54s
Compiler output check (ubuntu-latest)	4m 24s
Rust Tests (ubuntu-latest)	5m 15s
Build Rust Compiler (ubuntu-latest)	4m 49s
Compiler output check (macos-latest)	5m 18s
Rust Tests (macos-latest)	4m 19s
Build Rust Compiler (ubuntu-latest)	6m 1s
Rust Tests (windows-latest)	6m 8s
Build Rust Compiler (macos-latest)	9m 48s
JS Tests (Node 14.x)	1m 23s
Build Rust Compiler (macos-latest)	10m 25s
JS Tests (Node 16.x)	1m 30s
Rust Lint	18s
Build Rust Compiler (windows-latest)	7m 19s
Flow Typecheck	37s
VSCode Extension Lint	22s
Publish to NPM	1m 58s
	1h 10m 48s

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