`pyright.sublime-syntax` should be able to highlight Python codes

[Jack Cherng]

Since we remap python highlighting in the popup to pyright.sublime-syntax, it should be able to highlight Python codes as well. For those pyright one-line popup, it always starts with (variable), (function), (class) etc...

extension_counts: dict[str, int] = {}
"""
E.g.,
```python
{
    "": 55,       # without extensions
    ".docx": 10,  # MS Word
}
```
"""

cc @deathaxe