Auto merge of #13133 - Veykril:diag-hack, r=Veykril

Move empty diagnostics workaround back into the server

This only touches on the diagnostics in one place instead of multiple as was previously done, since all published diagnostics will go through this code path anyways.

Closes https://github.com/rust-lang/rust-analyzer/issues/13130

editors/code/src/client.ts

@@ -99,22 +99,6 @@ export async function createClient(
         traceOutputChannel: traceOutputChannel(),
         outputChannel: outputChannel(),
         middleware: {
-            async handleDiagnostics(uri, diagnostics, next) {
-                // Workaround for https://github.com/microsoft/vscode/issues/155531
-                for (const diagnostic of diagnostics) {
-                    if (!diagnostic.message) {
-                        diagnostic.message = " ";
-                    }
-                    if (diagnostic.relatedInformation) {
-                        for (const relatedInformation of diagnostic.relatedInformation) {
-                            if (!relatedInformation.message) {
-                                relatedInformation.message = " ";
-                            }
-                        }
-                    }
-                }
-                next(uri, diagnostics);
-            },
             async provideHover(
                 document: vscode.TextDocument,
                 position: vscode.Position,