Declare dependency on typing_extensions

venv as things like black depended on it. When running in a packaged
build, it wasn't being included, and Anki was failing to start.

I've added it to the anki module instead of aqt, even though only
the latter is currently using it, so that we don't accidentally introduce
the same bug in the future when using typing_extensions from within
libanki.

python/requirements.anki.in

@@ -6,3 +6,4 @@ protobuf>=4.21
 requests[socks]
 distro; sys_platform != "darwin" and sys_platform != "win32"
 psutil; sys_platform == "win32"
+typing_extensions

python/requirements.bundle.txt

@@ -382,6 +382,10 @@ tomli==2.0.1 \
     # via
     #   build
     #   pip-tools
+typing-extensions==4.13.2 \
+    --hash=sha256:a439e7c04b49fec3e5d3e2beaa21755cadbbdc391694e28ccdd36ca4a1408f8c \
+    --hash=sha256:e6c81219bd689f51865d9e372991c540bda33a0379d5573cddb9a3a23f7caaef
+    # via -r requirements.anki.in
 urllib3==2.2.2 \
     --hash=sha256:a448b2f64d686155468037e1ace9f2d2199776e17f0a46610480d311f73e3472 \
     --hash=sha256:dd505485549a7a552833da5e6063639d0d177c04f23bc3864e41e5dc5f612168

python/requirements.dev.txt

@@ -597,6 +597,7 @@ typing-extensions==4.12.2 \
     --hash=sha256:04e5ca0351e0f3f85c6853954072df659d0d13fac324d0072316b67d7794700d \
     --hash=sha256:1a7ead55c7e559dd4dee8856e3a88b41225abfe1ce8df57b7c13915fe121ffb8
     # via
+    #   -r requirements.anki.in
     #   astroid
     #   black
     #   fluent-syntax