Fix heapq and _heapq stubs

[jonathandung]

Closes #15666 and #15668.

[github-actions]

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

dd-trace-py (https://github.com/DataDog/dd-trace-py)
+ ddtrace/debugging/_encoding.py:286: error: Argument 1 to "heapify" has incompatible type "list[Node]"; expected "list[SupportsDunderLT[Any] | SupportsDunderGT[Any]]"  [arg-type]
+ ddtrace/debugging/_encoding.py:286: note: "list" is invariant -- see https://mypy.readthedocs.io/en/stable/common_issues.html#variance
+ ddtrace/debugging/_encoding.py:286: note: Consider using "Sequence" instead, which is covariant

async-utils (https://github.com/mikeshardmind/async-utils)
+ src/async_utils/_graphs.py:204: error: Argument 1 to "heapify" has incompatible type "list[tuple[HashAndCompareT, NodeData[HashAndCompareT]]]"; expected "list[SupportsDunderLT[Any] | SupportsDunderGT[Any]]"  [arg-type]
+ src/async_utils/_graphs.py:204: note: "list" is invariant -- see https://mypy.readthedocs.io/en/stable/common_issues.html#variance
+ src/async_utils/_graphs.py:204: note: Consider using "Sequence" instead, which is covariant

spark (https://github.com/apache/spark)
+ python/pyspark/shuffle.py:561: error: Argument "key" to "merge" has incompatible type "Callable[[V], Any] | None"; expected "Callable[[V], SupportsDunderLT[Any] | SupportsDunderGT[Any]]"  [arg-type]
+ python/pyspark/core/rdd.py:2575: error: Argument "key" to "nlargest" has incompatible type "Callable[[T], S] | None"; expected "Callable[[T], SupportsDunderLT[Any] | SupportsDunderGT[Any]]"  [arg-type]
+ python/pyspark/core/rdd.py:2578: error: Argument "key" to "nlargest" has incompatible type "Callable[[T], S] | None"; expected "Callable[[T], SupportsDunderLT[Any] | SupportsDunderGT[Any]]"  [arg-type]
+ python/pyspark/core/rdd.py:2635: error: Argument 3 to "nsmallest" has incompatible type "Callable[[T], S] | None"; expected "Callable[[T], SupportsDunderLT[Any] | SupportsDunderGT[Any]]"  [arg-type]
+ python/pyspark/core/rdd.py:2637: error: Argument 3 to "nsmallest" has incompatible type "Callable[[T], S] | None"; expected "Callable[[T], SupportsDunderLT[Any] | SupportsDunderGT[Any]]"  [arg-type]

aiohttp (https://github.com/aio-libs/aiohttp)
+ aiohttp/cookiejar.py:259:27: error: Argument 1 to "heapify" has incompatible type "list[tuple[float, tuple[str, str, str]]]"; expected "list[SupportsDunderLT[Any] | SupportsDunderGT[Any]]"  [arg-type]
+ aiohttp/cookiejar.py:259:27: note: "list" is invariant -- see https://mypy.readthedocs.io/en/stable/common_issues.html#variance
+ aiohttp/cookiejar.py:259:27: note: Consider using "Sequence" instead, which is covariant

trio (https://github.com/python-trio/trio)
+ src/trio/_core/_run.py:303: error: Argument 1 to "heapify" has incompatible type "list[tuple[float, int, CancelScope]]"; expected "list[SupportsDunderLT[Any] | SupportsDunderGT[Any]]"  [arg-type]
+ src/trio/_core/_run.py:303: note: "list" is invariant -- see https://mypy.readthedocs.io/en/stable/common_issues.html#variance
+ src/trio/_core/_run.py:303: note: Consider using "Sequence" instead, which is covariant