Change server_name field to String type and simplify implementation

Co-authored-by: bnjbvr <1180019+bnjbvr@users.noreply.github.com>

Author: Copilot

bindings/matrix-sdk-ffi/src/client.rs

@@ -1817,7 +1817,7 @@ pub struct ServerVersionInfo {
 impl From<matrix_sdk::ServerVersionInfo> for ServerVersionInfo {
     fn from(value: matrix_sdk::ServerVersionInfo) -> Self {
         Self {
-            server_name: value.server_name.to_string(),
+            server_name: value.server_name,
             version: value.version,
         }
     }

crates/matrix-sdk/src/client/mod.rs

@@ -156,7 +156,7 @@ pub enum SessionChange {
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub struct ServerVersionInfo {
     /// The server name.
-    pub server_name: OwnedServerName,
+    pub server_name: String,
     /// The server version.
     pub version: String,
 }
@@ -557,12 +557,7 @@ impl Client {
         let server_name_str = server.name.unwrap_or_else(|| "unknown".to_string());
         let version = server.version.unwrap_or_else(|| "unknown".to_string());
 
-        // Try to parse the server name, fallback to a safe default if parsing fails
-        let server_name = server_name_str
-            .try_into()
-            .unwrap_or_else(|_| "unknown.server".try_into().unwrap());
-        
-        Ok(ServerVersionInfo { server_name, version })
+        Ok(ServerVersionInfo { server_name: server_name_str, version })
     }
 
     /// Get a copy of the default request config.

crates/matrix-sdk/tests/integration/client.rs

@@ -1514,7 +1514,7 @@ async fn test_server_version() {
 
     let server_info = client.server_version().await.unwrap();
 
-    assert_eq!(server_info.server_name.as_str(), "Synapse");
+    assert_eq!(server_info.server_name, "Synapse");
     assert_eq!(server_info.version, "1.70.0");
 }
 
@@ -1537,6 +1537,6 @@ async fn test_server_version_with_missing_fields() {
     let server_info = client.server_version().await.unwrap();
 
     // Should use defaults for missing fields
-    assert_eq!(server_info.server_name.as_str(), "unknown");
+    assert_eq!(server_info.server_name, "unknown");
     assert_eq!(server_info.version, "unknown");
 }