add frame_system::DefaultConfig to individual pallet DefaultConfigs (#14453)

* add frame_system::DefaultConfig to individual pallet DefaultConfigs

* Fixes tests

* Minor fix

* ".git/.scripts/commands/fmt/fmt.sh"

* Adds UI Tests

---------

Co-authored-by: Nikhil Gupta <17176722+gupnik@users.noreply.github.com>
Co-authored-by: command-bot <>

substrate/frame/support/test/tests/pallet_ui/default_config_with_no_default_in_system.rs

@@ -0,0 +1,15 @@
+#[frame_support::pallet]
+mod pallet {
+	use frame_support::pallet_prelude::*;
+
+	#[pallet::config(with_default)]
+	pub trait Config: frame_system::Config {
+		#[pallet::constant]
+		type MyGetParam2: Get<Self::RuntimeCall>;
+	}
+
+	#[pallet::pallet]
+	pub struct Pallet<T>(_);
+}
+
+fn main() {}

substrate/frame/support/test/tests/pallet_ui/default_config_with_no_default_in_system.stderr

@@ -0,0 +1,5 @@
+error[E0220]: associated type `RuntimeCall` not found for `Self`
+ --> tests/pallet_ui/default_config_with_no_default_in_system.rs:8:31
+  |
+8 |         type MyGetParam2: Get<Self::RuntimeCall>;
+  |                                     ^^^^^^^^^^^ associated type `RuntimeCall` not found

substrate/frame/support/test/tests/pallet_ui/pass/default_config.rs

@@ -0,0 +1,15 @@
+#[frame_support::pallet]
+mod pallet {
+	use frame_support::pallet_prelude::*;
+
+	#[pallet::config(with_default)]
+	pub trait Config: frame_system::Config {
+		#[pallet::constant]
+		type MyGetParam2: Get<Self::AccountId>;
+	}
+
+	#[pallet::pallet]
+	pub struct Pallet<T>(_);
+}
+
+fn main() {}