Unify is_external prop in rx.redirect and rx.link (#4389)

* Unify `is_external` prop in `rx.redirect` and `rx.link`

* default external to `None`

* address PR comment

* use a one-liner

* reorder args for api stability

Co-authored-by: Masen Furer <m_github@0x26.net>

* reorder doc args

* external arg as deprecated in the docs

* Update reflex/event.py

Co-authored-by: Khaleel Al-Adhami <khaleel.aladhami@gmail.com>

* Fixup typing_extensions import and ruff

---------

Co-authored-by: Masen Furer <m_github@0x26.net>
Co-authored-by: Khaleel Al-Adhami <khaleel.aladhami@gmail.com>

reflex/event.py

@@ -25,6 +25,7 @@
     overload,
 )
 
+import typing_extensions
 from typing_extensions import (
     Concatenate,
     ParamSpec,
@@ -714,26 +715,61 @@ def fn():
     )
 
 
+@overload
+def redirect(
+    path: str | Var[str],
+    is_external: Optional[bool] = None,
+    replace: bool = False,
+) -> EventSpec: ...
+
+
+@overload
+@typing_extensions.deprecated("`external` is deprecated use `is_external` instead")
+def redirect(
+    path: str | Var[str],
+    is_external: Optional[bool] = None,
+    replace: bool = False,
+    external: Optional[bool] = None,
+) -> EventSpec: ...
+
+
 def redirect(
     path: str | Var[str],
-    external: Optional[bool] = False,
-    replace: Optional[bool] = False,
+    is_external: Optional[bool] = None,
+    replace: bool = False,
+    external: Optional[bool] = None,
 ) -> EventSpec:
     """Redirect to a new path.
 
     Args:
         path: The path to redirect to.
-        external: Whether to open in new tab or not.
+        is_external: Whether to open in new tab or not.
         replace: If True, the current page will not create a new history entry.
+        external(Deprecated): Whether to open in new tab or not.
 
     Returns:
         An event to redirect to the path.
     """
+    if external is not None:
+        console.deprecate(
+            "The `external` prop in `rx.redirect`",
+            "use `is_external` instead.",
+            "0.6.6",
+            "0.7.0",
+        )
+
+    # is_external should take precedence over external.
+    is_external = (
+        (False if external is None else external)
+        if is_external is None
+        else is_external
+    )
+
     return server_side(
         "_redirect",
         get_fn_signature(redirect),
         path=path,
-        external=external,
+        external=is_external,
         replace=replace,
     )