Fix: Enable `keep_fn_names` In SWC Mangling #7855

Job	Run time
Check MSRV	43s
Test Suite with Optimizations	6m 31s
Test Suite	6m 11s
cargo test \| windows	10m 30s
Check	1m 59s
Clippy	2m 45s
Docs	2m 46s
Rustfmt	33s
matrix_test (aarch64-apple-darwin, macos-latest, 1.79.0, false, test, --all --tests)	6m 18s
nix (ubuntu-latest)	7m 25s
matrix_test (x86_64-apple-darwin, macos-13, 1.79.0, false, test, --all --tests)	9m 25s
Playwright Tests	8m 38s
nix (macos-latest)	8m 19s
matrix_test (aarch64-apple-ios, macos-latest, 1.79.0, false, build, --package dioxus-mobile)	1m 15s
matrix_test (aarch64-linux-android, ubuntu-latest, 1.79.0, true, build, --package dioxus-mobile)	2m 1s
	1h 15m 19s

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