debugger beta: Fix gdb/delve JSON data conversion from New Session Modal (#31501)

test that check's that each conversion works properly based on the
adapter's config validation function. 

Co-authored-by: Zed AI \<ai@zed.dev\>

Release Notes:

- debugger beta: Fix bug where Go/GDB configuration's wouldn't work from
NewSessionModal

crates/dap_adapters/src/go.rs

@@ -307,10 +307,14 @@ impl DebugAdapter for GoDebugAdapter {
         let mut args = match &zed_scenario.request {
             dap::DebugRequest::Attach(attach_config) => {
                 json!({
+                    "request": "attach",
+                    "mode": "debug",
                     "processId": attach_config.process_id,
                 })
             }
             dap::DebugRequest::Launch(launch_config) => json!({
+                "request": "launch",
+                "mode": "debug",
                 "program": launch_config.program,
                 "cwd": launch_config.cwd,
                 "args": launch_config.args,