Ignore Pyright error in create_dagster_package.py (dagster-io#21688)

## Summary & Motivation

This PR adds a `#type: ignore` to 2 lines in
`scripts/create_dagster_package.py` so that Pyright stops yelling. No
changes were made to the script in one year, so this is most likely
coming from a new Pyright version.

Also, disables the Pyright rule `reportUnnecessaryTypeIgnoreComment` for
the same reasons as in dagster-io#21525

Local error:

```
python scripts/run-pyright.py --all
Creating temporary pyright config file at pyrightconfig-alt-1.json
Running pyright for environment `alt-1`...
  pyright --project=pyrightconfig-alt-1.json --outputjson --level=warning --warnings
Creating temporary pyright config file at pyrightconfig-master.json
Running pyright for environment `master`...
  pyright --project=pyrightconfig-master.json --outputjson --level=warning --warnings

/Users/maximearmstrong/Documents/Repositories/dagster-io/dagster/scripts/create_dagster_package.py:
  102:56: Argument of type "TextIOWrapper" cannot be assigned to parameter "fp" of type "str | IO[bytes]" in function "dump"
  Type "TextIOWrapper" cannot be assigned to type "str | IO[bytes]"
    "TextIOWrapper" is incompatible with "str"
    "TextIOWrapper" is incompatible with "IO[bytes]"
      Type parameter "AnyStr@IO" is invariant, but "str" is not the same as "bytes" (reportArgumentType)

  127:15: Argument of type "TextIOWrapper" cannot be assigned to parameter "fp" of type "str | IO[bytes]" in function "dump"
  Type "TextIOWrapper" cannot be assigned to type "str | IO[bytes]"
    "TextIOWrapper" is incompatible with "str"
    "TextIOWrapper" is incompatible with "IO[bytes]"
      Type parameter "AnyStr@IO" is invariant, but "str" is not the same as "bytes" (reportArgumentType)

pyright 1.1.356
Finished in 49.03 seconds
Analyzed 3440 files
Found 2 errors
Found 0 warnings
make: *** [pyright] Error 1
```

[BK
error](https://buildkite.com/dagster/dagster-dagster/builds/82305#018f4f19-b9a3-4d04-9525-40678bb5ede0)

## How I Tested These Changes

```
make rebuild_pyright_pins
make pyright
```
BK

scripts/create_dagster_package.py

@@ -1,4 +1,6 @@
+# pyright: reportUnnecessaryTypeIgnoreComment=false
 # ruff: noqa: T201
+
 import os
 
 import click
@@ -99,7 +101,7 @@ def _make_dagster_package(package_name: str):
  print(f"Writing {to_create}")
  template = jinja_env.get_template(f"{to_create}.tmpl")
  with open(variables["path"], "w") as f:
- template.stream(**variables["kwargs"]).dump(f)
+ template.stream(**variables["kwargs"]).dump(f) # type: ignore
 
  if variables["has_todos"]:
  has_todos.append(variables["path"])
@@ -124,7 +126,7 @@ def _make_dagster_package(package_name: str):
  hyphen_name=package_name,
  underscore_name=package_name_underscore,
  formal_name=formal_name,
- ).dump(f)
+ ).dump(f) # type: ignore
 
  has_todos.append(docs_path)