Fix NameError and other issues in gh_parse.py and gh_report.py (#3164)

Noticed, the script fails sometimes with

```
  File "/home/runner/work/eng-dev-ecosystem/eng-dev-ecosystem/ext/cli/tools/gh_parse.py", line 109, in parse_file
    results.setdefault(testname, MISS)
                                 ^^^^
NameError: name 'MISS' is not defined
```

This and other issues are found by ruff.

Author: denik

tools/gh_parse.py

@@ -6,7 +6,6 @@
 import sys
 import json
 import argparse
-import re
 from collections import Counter
 from pathlib import Path
 
@@ -78,7 +77,7 @@ def parse_file(path, filter):
         try:
             data = json.loads(line)
         except Exception as ex:
-            print(f"{filename}: {ex}\n{line!r}\n")
+            print(f"{path}: {ex}\n{line!r}\n")
             break
         testname = data.get("Test")
         if not testname:
@@ -106,7 +105,7 @@ def parse_file(path, filter):
         if "panic: " in str(lines):
             results.setdefault(testname, PANIC)
         else:
-            results.setdefault(testname, MISS)
+            results.setdefault(testname, MISSING)
 
     return results, outputs
 
@@ -272,16 +271,19 @@ def format_table(table, columns=None, markdown=False):
         for row in table:
             write("| " + " | ".join(str(row.get(col, "")).ljust(w) for col, w in zip(columns, widths)) + " |")
     else:
-        fmt = lambda cells: "  ".join(str(cell).ljust(w) for cell, w in zip(cells, widths))
-        write(fmt(columns))
+        write(fmt(columns, widths))
         for ind, row in enumerate(table):
-            write(fmt([row.get(col, "") for col in columns]))
+            write(fmt([row.get(col, "") for col in columns], widths))
 
     write("")
 
     return "\n".join(result)
 
 
+def fmt(cells, widths):
+    return "  ".join(str(cell).ljust(w) for cell, w in zip(cells, widths))
+
+
 def wrap_in_details(txt, summary):
     return f"<details><summary>{summary}</summary>\n\n{txt}\n\n</details>"
 

tools/gh_report.py

@@ -169,9 +169,9 @@ def main():
     if args.filter_env:
         cmd.extend(["--filter-env", args.filter_env])
     if args.output:
-        cmd.append(f"--output")
+        cmd.append("--output")
     if args.markdown:
-        cmd.append(f"--markdown")
+        cmd.append("--markdown")
     cmd.append(f"{target_dir}")
     run(cmd, shell=True)