!squash fix: rename _global to global_ in base HooksMixin

why: Python convention uses trailing underscore (global_) to avoid
conflicts with reserved words, not leading underscore (_global).

what:
- Rename _global to global_ in set_hook, unset_hook, show_hooks
- Rename _global to global_ in _show_hook, show_hook

Author: tony

src/libtmux/hooks.py

@@ -122,7 +122,7 @@ def set_hook(
         ignore_errors: bool | None = None,
         append: bool | None = None,
         g: bool | None = None,
-        _global: bool | None = None,
+        global_: bool | None = None,
         scope: OptionScope | _DefaultOptionScope | None = DEFAULT_OPTION_SCOPE,
     ) -> Self:
         """Set hook for tmux target.
@@ -170,8 +170,8 @@ def set_hook(
             assert isinstance(append, bool)
             flags.append("-a")
 
-        if _global is not None and _global:
-            assert isinstance(_global, bool)
+        if global_ is not None and global_:
+            assert isinstance(global_, bool)
             flags.append("-g")
 
         if scope is not None and not isinstance(scope, _DefaultOptionScope):
@@ -201,7 +201,7 @@ def set_hook(
     def unset_hook(
         self,
         hook: str,
-        _global: bool | None = None,
+        global_: bool | None = None,
         ignore_errors: bool | None = None,
         scope: OptionScope | _DefaultOptionScope | None = DEFAULT_OPTION_SCOPE,
     ) -> Self:
@@ -228,8 +228,8 @@ def unset_hook(
             assert isinstance(ignore_errors, bool)
             flags.append("-q")
 
-        if _global is not None and _global:
-            assert isinstance(_global, bool)
+        if global_ is not None and global_:
+            assert isinstance(global_, bool)
             flags.append("-g")
 
         if scope is not None and not isinstance(scope, _DefaultOptionScope):
@@ -257,7 +257,7 @@ def unset_hook(
 
     def show_hooks(
         self,
-        _global: bool | None = False,
+        global_: bool | None = False,
         scope: OptionScope | _DefaultOptionScope | None = DEFAULT_OPTION_SCOPE,
         ignore_errors: bool | None = None,
     ) -> HookDict:
@@ -267,7 +267,7 @@ def show_hooks(
 
         flags: tuple[str, ...] = ()
 
-        if _global:
+        if global_:
             flags += ("-g",)
 
         if scope is not None and not isinstance(scope, _DefaultOptionScope):
@@ -306,7 +306,7 @@ def show_hooks(
     def _show_hook(
         self,
         hook: str,
-        _global: bool = False,
+        global_: bool = False,
         scope: OptionScope | _DefaultOptionScope | None = DEFAULT_OPTION_SCOPE,
         ignore_errors: bool | None = None,
     ) -> list[str] | None:
@@ -326,7 +326,7 @@ def _show_hook(
 
         flags: tuple[str | int, ...] = ()
 
-        if _global:
+        if global_:
             flags += ("-g",)
 
         if scope is not None and not isinstance(scope, _DefaultOptionScope):
@@ -356,7 +356,7 @@ def _show_hook(
     def show_hook(
         self,
         hook: str,
-        _global: bool = False,
+        global_: bool = False,
         scope: OptionScope | _DefaultOptionScope | None = DEFAULT_OPTION_SCOPE,
         ignore_errors: bool | None = None,
     ) -> str | int | None: