Don't print the whole disassembly upon validation error

I'm getting "[wasm-validator error in module] unexpected true: Exported global cannot be mutable, on
global$0" error in one of the modules I'm working on.

While I know what's the cause of the issue in this case, the other problem I've noticed due to this is that wasm-opt prints the whole disassembly to the console upon a validation error. In this case the module is below ~400KB, and it takes ~90 seconds to disassemble and print all of it to the console. I suspect, at least some part of this is due to slow-ish console implementation in VSCode, but it also conceals the original error, making it very hard to find and usually out of scrollback buffer altogether.

Could wasm-opt restrain from printing the whole disassembly, instead opting to only print a binary location in the Wasm module and letting user disassemble separately if they really wish to? (e.g. for the error above it's not strictly necessary or helpful anyway)

Start with wasm-opt's validation-error handling and the path that prints the disassembly. Reproduce the reported validation failure with a module that triggers it, then verify that the original error remains visible without automatically printing the whole module, while a useful binary location is still reported.