[antlir][bzl] Allow ignore_symlink_tree to be selectable

Summary: In certain build modes (e.g. `dbgo-cov`), symlink trees may be necessary (e.g. `libdsi.so`) or not.

Test Plan: CI

Reviewed By: vmagro

Differential Revision: D87366213

fbshipit-source-id: b59cecdd8127862f5342aed19e721e8eb2a919a6

Author: Anass Al-Wohoush

antlir/antlir2/features/install/install.bzl

@@ -47,7 +47,7 @@ def install(
         always_use_gnu_debuglink: bool = False,
         setcap: str | None = None,
         default_permissions: default_permissions = default_permissions(),
-        ignore_symlink_tree: bool = False,
+        ignore_symlink_tree: bool | Select = False,
         transition_to_distro_platform: transition_to_distro_platform | str | bool = False):
     """
     Install a file or directory into the image.