Added runtime dependency to fix the intermittent test failures

src/mono/wasm/runtime/library_mono.js

@@ -2365,12 +2365,14 @@ var MonoSupportLib = {
 		},
 
 		/**
-		 * Loads the mono config file (typically called mono-config.json)
+		 * Loads the mono config file (typically called mono-config.json) asynchroniously
+		 * Note: the run dependencies are so emsdk actually awaits it in order.
 		 *
 		 * @param {string} configFilePath - relative path to the config file
 		 * @throws Will throw an error if the config file loading fails
 		 */
-		mono_wasm_load_config: async function (configFilePath) {		
+		mono_wasm_load_config: async function (configFilePath) {
+			Module.addRunDependency('mono-config.json');	
 			try {
 				let config = null;
 				// NOTE: when we add nodejs make sure to include the nodejs fetch package
@@ -2382,8 +2384,10 @@ var MonoSupportLib = {
 				} else { // shell or worker
 					config = JSON.parse(read(configFilePath)); // read is a v8 debugger command
 				}
+				Module.removeDependency('mono-config.json');
 				return config;
 			} catch(e) {
+				Module.removeDependency('mono-config.json');
 				return {message: "failed to load config file", error: e};
 			}
 		}