stdlib: add some defaults

[JelleZijlstra]

Ran stubdefaulter on the stdlib.

[github-actions]

Diff from mypy_primer, showing the effect of this PR on open source code:

pandas (https://github.com/pandas-dev/pandas)
- pandas/io/common.py:1050: note:     def __init__(self, file: str | PathLike[str] | _ZipWritable, mode: Literal['w', 'x'] = ..., compression: int = ..., allowZip64: bool = ..., compresslevel: int | None = ..., *, strict_timestamps: bool = ..., metadata_encoding: None = ...) -> ZipFile
+ pandas/io/common.py:1050: note:     def __init__(self, file: str | PathLike[str] | _ZipWritable, mode: Literal['w', 'x'], compression: int = ..., allowZip64: bool = ..., compresslevel: int | None = ..., *, strict_timestamps: bool = ..., metadata_encoding: None = ...) -> ZipFile
- pandas/io/common.py:1050: note:     def __init__(self, file: str | PathLike[str] | _ZipReadableTellable, mode: Literal['a'] = ..., compression: int = ..., allowZip64: bool = ..., compresslevel: int | None = ..., *, strict_timestamps: bool = ..., metadata_encoding: None = ...) -> ZipFile
+ pandas/io/common.py:1050: note:     def __init__(self, file: str | PathLike[str] | _ZipReadableTellable, mode: Literal['a'], compression: int = ..., allowZip64: bool = ..., compresslevel: int | None = ..., *, strict_timestamps: bool = ..., metadata_encoding: None = ...) -> ZipFile
- pandas/_testing/_io.py:141: note:     def __init__(self, file: str | PathLike[str] | _ZipWritable, mode: Literal['w', 'x'] = ..., compression: int = ..., allowZip64: bool = ..., compresslevel: int | None = ..., *, strict_timestamps: bool = ..., metadata_encoding: None = ...) -> ZipFile
+ pandas/_testing/_io.py:141: note:     def __init__(self, file: str | PathLike[str] | _ZipWritable, mode: Literal['w', 'x'], compression: int = ..., allowZip64: bool = ..., compresslevel: int | None = ..., *, strict_timestamps: bool = ..., metadata_encoding: None = ...) -> ZipFile
- pandas/_testing/_io.py:141: note:     def __init__(self, file: str | PathLike[str] | _ZipReadableTellable, mode: Literal['a'] = ..., compression: int = ..., allowZip64: bool = ..., compresslevel: int | None = ..., *, strict_timestamps: bool = ..., metadata_encoding: None = ...) -> ZipFile
+ pandas/_testing/_io.py:141: note:     def __init__(self, file: str | PathLike[str] | _ZipReadableTellable, mode: Literal['a'], compression: int = ..., allowZip64: bool = ..., compresslevel: int | None = ..., *, strict_timestamps: bool = ..., metadata_encoding: None = ...) -> ZipFile

discord.py (https://github.com/Rapptz/discord.py)
- discord/ext/commands/hybrid.py:508: error: Overlap between argument names and ** TypedDict items: "description", "name"  [misc]
+ discord/ext/commands/hybrid.py:508: error: Overlap between argument names and ** TypedDict items: "name", "description"  [misc]
- discord/ext/commands/hybrid.py:629: error: Overlap between argument names and ** TypedDict items: "description", "name"  [misc]
+ discord/ext/commands/hybrid.py:629: error: Overlap between argument names and ** TypedDict items: "name", "description"  [misc]
- discord/ext/commands/hybrid.py:834: error: Overlap between argument names and ** TypedDict items: "with_app_command", "name"  [misc]
+ discord/ext/commands/hybrid.py:834: error: Overlap between argument names and ** TypedDict items: "name", "with_app_command"  [misc]
- discord/ext/commands/hybrid.py:858: error: Overlap between argument names and ** TypedDict items: "with_app_command", "name"  [misc]
+ discord/ext/commands/hybrid.py:858: error: Overlap between argument names and ** TypedDict items: "name", "with_app_command"  [misc]
- discord/ext/commands/hybrid.py:883: error: Overlap between argument names and ** TypedDict items: "with_app_command", "name"  [misc]
+ discord/ext/commands/hybrid.py:883: error: Overlap between argument names and ** TypedDict items: "name", "with_app_command"  [misc]
- discord/ext/commands/hybrid.py:935: error: Overlap between argument names and ** TypedDict items: "with_app_command", "name"  [misc]
+ discord/ext/commands/hybrid.py:935: error: Overlap between argument names and ** TypedDict items: "name", "with_app_command"  [misc]
- discord/ext/commands/bot.py:290: error: Overlap between argument names and ** TypedDict items: "with_app_command", "name"  [misc]
+ discord/ext/commands/bot.py:290: error: Overlap between argument names and ** TypedDict items: "name", "with_app_command"  [misc]
- discord/ext/commands/bot.py:314: error: Overlap between argument names and ** TypedDict items: "with_app_command", "name"  [misc]
+ discord/ext/commands/bot.py:314: error: Overlap between argument names and ** TypedDict items: "name", "with_app_command"  [misc]