This makes handle_sigint default to False

See:
 - https://github.com/void-linux/void-packages/issues/35712
 - https://github.com/prompt-toolkit/python-prompt-toolkit/issues/1576
 - https://trac.sagemath.org/ticket/33360#comment:3

diff -ur a/src/prompt_toolkit/application/application.py b/src/prompt_toolkit/application/application.py
--- a/src/prompt_toolkit/application/application.py
+++ b/src/prompt_toolkit/application/application.py
@@ -633,7 +633,7 @@
         self,
         pre_run: Optional[Callable[[], None]] = None,
         set_exception_handler: bool = True,
-        handle_sigint: bool = True,
+        handle_sigint: bool = False,
         slow_callback_duration: float = 0.5,
     ) -> _AppResult:
         """
@@ -858,7 +858,7 @@
         self,
         pre_run: Optional[Callable[[], None]] = None,
         set_exception_handler: bool = True,
-        handle_sigint: bool = True,
+        handle_sigint: bool = False,
         in_thread: bool = False,
     ) -> _AppResult:
         """
diff -ur a/src/prompt_toolkit/application/dummy.py b/src/prompt_toolkit/application/dummy.py
--- a/src/prompt_toolkit/application/dummy.py
+++ b/src/prompt_toolkit/application/dummy.py
@@ -24,7 +24,7 @@
         self,
         pre_run: Optional[Callable[[], None]] = None,
         set_exception_handler: bool = True,
-        handle_sigint: bool = True,
+        handle_sigint: bool = False,
         in_thread: bool = False,
     ) -> None:
         raise NotImplementedError("A DummyApplication is not supposed to run.")
@@ -33,7 +33,7 @@
         self,
         pre_run: Optional[Callable[[], None]] = None,
         set_exception_handler: bool = True,
-        handle_sigint: bool = True,
+        handle_sigint: bool = False,
         slow_callback_duration: float = 0.5,
     ) -> None:
         raise NotImplementedError("A DummyApplication is not supposed to run.")
diff -ur a/src/prompt_toolkit/shortcuts/prompt.py b/src/prompt_toolkit/shortcuts/prompt.py
--- a/src/prompt_toolkit/shortcuts/prompt.py
+++ b/src/prompt_toolkit/shortcuts/prompt.py
@@ -900,7 +900,7 @@
         accept_default: bool = False,
         pre_run: Optional[Callable[[], None]] = None,
         set_exception_handler: bool = True,
-        handle_sigint: bool = True,
+        handle_sigint: bool = False,
         in_thread: bool = False,
     ) -> _T:
         """
@@ -1135,7 +1135,7 @@
         accept_default: bool = False,
         pre_run: Optional[Callable[[], None]] = None,
         set_exception_handler: bool = True,
-        handle_sigint: bool = True,
+        handle_sigint: bool = False,
     ) -> _T:
 
         if message is not None: