Idiotic division/multiplication by 4 generated in len, as-max-len? and slice?

[Acaccia]

clarity-wasm/clar2wasm/src/words/sequences.rs

Lines 861 to 863 in 41079f3

	// UTF8 is represented as 32-bit unicode scalars values.
	builder.i32_const(4);
	builder.binop(BinaryOp::I32DivU);

clarity-wasm/clar2wasm/src/words/sequences.rs

Lines 408 to 412 in 41079f3

	builder.i32_const(4);
	// Divide the length of the list by the length of each element to get
	// the number of elements in the list.
	builder.binop(BinaryOp::I32DivU);

clarity-wasm/clar2wasm/src/words/sequences.rs

Lines 1413 to 1415 in 41079f3

	// UTF8 is represented as 32-bit unicode scalars values.
	builder.i64_const(4);
	builder.binop(BinaryOp::I64Mul);

These should be a shift of 2.