AK+Everywhere: Do not implicitly copy variables in TRY macros

For example, consider cases where we want to propagate errors only in
specific instances:

    auto result = read_data(); // something like ErrorOr<ByteBuffer>
    if (result.is_error() && result.error().code() != EINTR)
        continue;
    auto bytes = TRY(result);

The TRY invocation will currently copy the byte buffer when the
expression (in this case, just a local variable) is stored into
_temporary_result.

This patch binds the expression to a reference to prevent such copies.
In less trival invocations (such as TRY(some_function()), this will
incur only temporary lifetime extensions, i.e. no functional change.

Userland/Libraries/LibWeb/WebDriver/ExecuteScript.cpp

@@ -33,7 +33,7 @@ namespace Web::WebDriver {
 
 #define TRY_OR_JS_ERROR(expression)                                                                  \
     ({                                                                                               \
-        auto _temporary_result = (expression);                                                       \
+        auto&& _temporary_result = (expression);                                                     \
         if (_temporary_result.is_error()) [[unlikely]]                                               \
             return ExecuteScriptResultType::JavaScriptError;                                         \
         static_assert(!::AK::Detail::IsLvalueReference<decltype(_temporary_result.release_value())>, \