Add unknown login failure error messages

.changeset/add-detailed-login-info.md

@@ -0,0 +1,5 @@
+---
+default: patch
+---
+
+Added error messages provided by homeserver to unknown login errors.

src/app/pages/auth/login/PasswordLoginForm.tsx

@@ -258,7 +258,7 @@ export function PasswordLoginForm({ defaultUsername, defaultEmail }: PasswordLog
                 <FieldError message="Failed to login. Your login request has been rate-limited by server, Please try after some time." />
               )}
               {loginState.error.errcode === LoginError.Unknown && (
-                <FieldError message="Failed to login. Unknown reason." />
+                <FieldError message={`Failed to login: ${loginState.error.data.error}`} />
               )}
             </>
           )}

src/app/pages/auth/login/TokenLogin.tsx

@@ -81,7 +81,7 @@ export function TokenLogin({ token }: TokenLoginProps) {
             <LoginTokenError message="Failed to login. Your login request has been rate-limited by server, Please try after some time." />
           )}
           {loginState.error.errcode === LoginError.Unknown && (
-            <LoginTokenError message="Failed to login. Unknown reason." />
+            <LoginTokenError message={`Failed to login: ${loginState.error.data.error}`} />
           )}
         </>
       )}

src/app/pages/auth/login/loginUtil.ts

@@ -121,6 +121,7 @@ export const login = async (
           httpStatus: err.httpStatus,
         });
         throw new MatrixError({
+          error: err.message,
           errcode: LoginError.Unknown,
         });
       }