Rename _emscripten_run_on_main_thread_js. NFC (#24598)

Most other functions that end in `_js` signify the JS part of the
implementation (e.g. `tzset_js`). This new name (I think) is more
self-describing.

Author: sbc100

src/lib/libpthread.js

@@ -881,7 +881,7 @@ var LibraryPThread = {
   $proxyToMainThreadPtr: (...args) => BigInt(proxyToMainThread(...args)),
 #endif
 
-  $proxyToMainThread__deps: ['$stackSave', '$stackRestore', '$stackAlloc', '_emscripten_run_on_main_thread_js'],
+  $proxyToMainThread__deps: ['$stackSave', '$stackRestore', '$stackAlloc', '_emscripten_run_js_on_main_thread'],
   $proxyToMainThread__docs: '/** @type{function(number, (number|boolean), ...number)} */',
   $proxyToMainThread: (funcIndex, emAsmAddr, sync, ...callArgs) => {
     // EM_ASM proxying is done by passing a pointer to the address of the EM_ASM
@@ -921,7 +921,7 @@ var LibraryPThread = {
       HEAPF64[b + i] = arg;
 #endif
     }
-    var rtn = __emscripten_run_on_main_thread_js(funcIndex, emAsmAddr, serializedNumCallArgs, args, sync);
+    var rtn = __emscripten_run_js_on_main_thread(funcIndex, emAsmAddr, serializedNumCallArgs, args, sync);
     stackRestore(sp);
     return rtn;
   },

system/lib/pthread/proxying.c

@@ -603,7 +603,7 @@ static void run_js_func(void* arg) {
   }
 }
 
-double _emscripten_run_on_main_thread_js(int func_index,
+double _emscripten_run_js_on_main_thread(int func_index,
                                          void* em_asm_addr,
                                          int num_args,
                                          double* buffer,

test/other/codesize/test_codesize_minimal_pthreads.exports

@@ -13,5 +13,5 @@ u (pthread_self)
 v (_emscripten_proxy_main)
 w (_emscripten_thread_init)
 x (_emscripten_thread_crashed)
-y (_emscripten_run_on_main_thread_js)
+y (_emscripten_run_js_on_main_thread)
 z (_emscripten_thread_free_data)

test/other/codesize/test_codesize_minimal_pthreads.funcs

@@ -27,7 +27,7 @@ $__wasm_init_memory
 $__wasm_init_tls
 $_emscripten_check_mailbox
 $_emscripten_proxy_main
-$_emscripten_run_on_main_thread_js
+$_emscripten_run_js_on_main_thread
 $_emscripten_stack_alloc
 $_emscripten_stack_restore
 $_emscripten_thread_crashed

test/other/codesize/test_codesize_minimal_pthreads_memgrowth.exports

@@ -13,5 +13,5 @@ u (pthread_self)
 v (_emscripten_proxy_main)
 w (_emscripten_thread_init)
 x (_emscripten_thread_crashed)
-y (_emscripten_run_on_main_thread_js)
+y (_emscripten_run_js_on_main_thread)
 z (_emscripten_thread_free_data)

test/other/codesize/test_codesize_minimal_pthreads_memgrowth.funcs

@@ -27,7 +27,7 @@ $__wasm_init_memory
 $__wasm_init_tls
 $_emscripten_check_mailbox
 $_emscripten_proxy_main
-$_emscripten_run_on_main_thread_js
+$_emscripten_run_js_on_main_thread
 $_emscripten_stack_alloc
 $_emscripten_stack_restore
 $_emscripten_thread_crashed

tools/emscripten.py

@@ -1131,7 +1131,7 @@ def create_pointer_conversion_wrappers(metadata):
     '_wasmfs_read_file': '_ppp',
     '_wasmfs_node_record_dirent': '_pp_',
     '__dl_seterr': '_pp',
-    '_emscripten_run_on_main_thread_js': '__p_p_',
+    '_emscripten_run_js_on_main_thread': '__p_p_',
     '_emscripten_proxy_execute_task_queue': '_p',
     '_emscripten_thread_exit': '_p',
     '_emscripten_thread_init': '_p_____',