fix(tests): Adapt DaemonSuite to handle new pretty default

This commit adapts the `DaemonSuite` test runner and its corresponding data files to accommodate the new pretty-by-default behavior.

This fix is nuanced due to the stateful, client-server nature of the daemon and required a two-part approach:

1.  **Central Logic:** The `run_cmd` helper in `mypy/test/testdaemon.py` was modified to inject `--no-pretty` only into state-setting subcommands (`run`, `check`). This handles the majority of daemon tests.

2.  **Manual Overrides:** A number of test cases in `daemon.test` were manually updated. This was necessary for tests that start the daemon with `dmypy start` or have other unique requirements, ensuring  the server is correctly configured in non-pretty mode from the outset.

This combined strategy ensures the entire daemon test suite passes.

Part of #19108.

Author: null-dreams

mypy/test/testdaemon.py

@@ -79,6 +79,19 @@ def parse_script(input: list[str]) -> list[list[str]]:
 def run_cmd(input: str) -> tuple[int, str]:
     if input[1:].startswith("mypy run --") and "--show-error-codes" not in input:
         input += " --hide-error-codes"
+    is_pretty_test = "# NO-MODIFY" in input
+    modified_input = input.replace('# NO-MODIFY', '').strip()
+    cond1 = '--pretty' not in modified_input
+    cond2 = modified_input.startswith("dmypy run") or \
+            modified_input.startswith("dmypy check ")
+    cond3 = not is_pretty_test
+    if cond1 and cond2 and cond3:
+        parts = modified_input.split(' ', 2)
+        command, subcommand = parts[0], parts[1]
+        args = parts[2] if len(parts) > 2 else ""
+        input = f"{command} {subcommand} {args} --no-pretty".strip()
+    else:
+        input = modified_input
     if input.startswith("dmypy "):
         input = sys.executable + " -m mypy." + input
     if input.startswith("mypy "):