Add `mithril-client-wasm` tests in multi platform test #5240

Job	Run time
build-ubuntu-X64	2m 36s
build-test-wasm	1m 23s
build (macos-12)	2m 31s
test (ubuntu-22.04)	2m 36s
build (windows-latest)	2m 19s
test (macos-12)	2m 2s
build-docusaurus	2m 22s
test (windows-latest)	2m 19s
build-open-api-ui	6s
cargo-doc	1m 48s
check	1m 1s
build-test-explorer	46s
publish-wasm-test (mithril-client-wasm)	54s
publish-docs	1s
e2e	1s
publish-tests-results	1s
docker-mithril	1s
publish-crate-test	1s
unstable-release	1s
deploy-testing	1s
	22m 50s

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