crashes: Avoid crash handler on detached threads (#40883)

Set a TLS bit to skip invoking the crash handler when a detached thread
panics.

cc @P1n3appl3 - is this at odds with what we need the crash handler to
do?

May close #39289, cannot repro without a nightly build

Release Notes:

- Fixed extension panics crashing Zed on Linux

Co-authored-by: dino <dinojoaocosta@gmail.com>

crates/crashes/src/crashes.rs

@@ -286,6 +286,11 @@ impl minidumper::ServerHandler for CrashServer {
 }
 
 pub fn panic_hook(info: &PanicHookInfo) {
+    // Don't handle a panic on threads that are not relevant to the main execution.
+    if extension_host::wasm_host::IS_WASM_THREAD.with(|v| v.load(Ordering::Acquire)) {
+        return;
+    }
+
     let message = info
         .payload()
         .downcast_ref::<&str>()