Element R: Bump matrix-rust-sdk-crypto-wasm to version 4.0.0 (#4021)
* bump wasm bindings version 4.0.0
* fix test compilation with initFromStore
* Fix test due to change in wasm handling of Vec<>
* review: Better doc
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
* review: Better doc
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
* review: revert userIdentity free removal
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Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>