[BUG] Don't use implicit-optional for type hints

[KotlinIsland]

Context:

• Playwright Version: [what Playwright version do you use?] 1.24.0
• Operating System: [e.g. Windows, Linux or Mac] N/A
• Python version: [e.g. 3.7, 3.9] 3.10
• Browser: [e.g. All, Chromium, Firefox, WebKit] N/A
• Extra: [any specific details about your environment] N/A

Code Snippet

browser.launch(proxy=None)  # mypy error: expected "ProxySettings" found "None"

Describe the bug

proxy: ProxySettings = None,

This should be typed as:

proxy: Optional[ProxySettings] = None,

implicit optional is deprecated(dead in the water 💀🌊)

[rwoll]

Reference: python/mypy#9091

[KotlinIsland]

@rwoll are emojis deprecated?

[rwoll]

In titles, yes. The title was standardized with the rest of the titles. The emoji is redundant to the [BUG] bit.

Thanks!

[KotlinIsland]

I like the emojis, every time I see them it puts a smile on my dial 😄