Fix binary parser of declarative element segments (#6618)

The parser was incorrectly handling the parsing of declarative element segments whose `init` is a `vec(expr)`.
https://webassembly.github.io/spec/core/binary/modules.html#element-section
Binry parser was simply reading a single `u32LEB` value for `init`
instead of parsing a expression regardless `usesExpressions = true`.

This commit updates the `WasmBinaryReader::readElementSegments` function
to correctly parse the expressions for declarative element segments by
calling `readExpression` instead of `getU32LEB` when `usesExpressions = true`.

Resolves the parsing exception:
"[parse exception: bad section size, started at ... not being equal to new position ...]"

Related discussion: https://github.com/tanishiking/scala-wasm/issues/136

1 files changed, 0 insertions, 0 deletions

diff --git a/test/lit/binary/declarative-element-use-expr.test.wasm b/test/lit/binary/declarative-element-use-expr.test.wasm
new file mode 100644
index 000000000..54ebc37d4
--- /dev/null
+++ b/test/lit/binary/declarative-element-use-expr.test.wasm