cannot specify REFLEX_CORS_ALLOWED_ORIGINS as an envvar

[masenf]

Describe the bug
The env var parser automatically splits Sequence type args on path.sep (colon on posix), so trying to specify a URL as a CORS origin ends up splitting the string into parts

To Reproduce
REFLEX_CORS_ALLOWED_ORIGINS=http://localhost:3000 python -c 'import reflex as rx; print(rx.Config(app_name="_").cors_allowed_origins)'

['http', '//localhost', '3000']

Expected behavior
Need another way of splitting CORS origins, so that a common and necessary character in URLs is not treated as a delimiter.

`['http://localhost:3000']

Specifics (please complete the following information):

• Python Version: 3.14
• Reflex Version: 0.8.24
• OS: macOS

Workaround

1. set allowed_cors_origins in rxconfig.py

[masenf]

bad bit of code

reflex/reflex/environment.py

Lines 281 to 289 in 5b3aa27

	if get_origin(field_type) in (list, Sequence):
	return [
	interpret_env_var_value(
	v,
	get_args(field_type)[0],
	f"{field_name}[{i}]",
	)
	for i, v in enumerate(value.split(":"))
	]

i'm thinking of layering an Annotated type to specify the delimeter for these purposes since we pass this in anyway