chore(deps): update frame-metadata requirement from 18.0.0 to 23.0.0

Cargo.toml

@@ -19,7 +19,7 @@ exclude = ["/for_tests", "/.github"]
 [dependencies]
 bitvec = { version = "1.0.1", default-features = false, features = ["alloc"] }
 external-memory-tools = { version = "0.1.1", default-features = false }
-frame-metadata = { version = "18.0.0", default-features = false, features = [
+frame-metadata = { version = "23.0.0", default-features = false, features = [
     "current",
     "decode",
 ] }

src/fill_prepare.rs

@@ -626,12 +626,7 @@ impl TransactionToFill {
 
     pub fn try_default_tip(&mut self) {
         for extension in self.extensions.iter_mut() {
-            try_default_tip(&mut extension.content);
-            if let TypeContentToFill::Composite(ref mut fields_to_fill) = extension.content {
-                for field in fields_to_fill.iter_mut() {
-                    try_default_tip(&mut field.type_to_fill.content);
-                }
-            }
+            try_default_tip_nested(&mut extension.content);
         }
     }
 
@@ -915,6 +910,18 @@ impl TransactionToFill {
         Ok(None)
     }
 
+    pub fn set_signature(&mut self, signature: &SignatureSr25519) {
+        if let TypeContentToFill::Variant(ref mut multisig) = self.signature.content {
+            match multisig.selected.fields_to_fill[0].type_to_fill.content {
+                TypeContentToFill::SpecialType(SpecialTypeToFill::SignatureSr25519(ref mut sr25519)) =>
+                    *sr25519 = Some(SignatureSr25519(signature.0)),
+                TypeContentToFill::ArrayU8(ref mut sr25519) =>
+                    sr25519.content = signature.0.to_vec(),
+                _ => {}
+            }
+        }
+    }
+
     pub fn send_this_signed<E, M>(&self, metadata: &M) -> Result<Option<Vec<u8>>, ErrorFixMe<E, M>>
     where
         E: ExternalMemory,
@@ -1115,6 +1122,15 @@ fn nonce_got_filled(content: &mut TypeContentToFill, rpc_u32: u32) -> bool {
     }
 }
 
+fn try_default_tip_nested(content: &mut TypeContentToFill) {
+    try_default_tip(content);
+    if let TypeContentToFill::Composite(ref mut fields_to_fill) = content {
+        for field in fields_to_fill.iter_mut() {
+            try_default_tip_nested(&mut field.type_to_fill.content);
+        }
+    }
+}
+
 fn try_default_tip(content: &mut TypeContentToFill) {
     match content {
         TypeContentToFill::Primitive(PrimitiveToFill::CompactUnsigned(