restore bluetooth socket constants on Linux

fixes #15207

Author: tungol

stdlib/@tests/stubtest_allowlists/linux.txt

@@ -27,6 +27,14 @@ fcntl.I_[A-Z0-9_]+  # Platform differences that cannot be captured by the type s
 multiprocessing.popen_spawn_win32  # exists on Linux but fails to import
 select.poll  # Actually a function; we have a class so it can be used as a type
 
+# Bluetooth constants which aren't on the GitHub Actions runners, see #15207
+_?socket.AF_BLUETOOTH
+_?socket.BDADDR_ANY
+_?socket.BTPROTO_HCI
+_?socket.BTPROTO_L2CAP
+_?socket.BTPROTO_RFCOMM
+_?socket.BTPROTO_SCO
+
 # These seem like they should be available on Linux, but they're not
 # on GitHub Actions runners for some reason.
 _?socket.IPX_TYPE

stdlib/_socket.pyi

@@ -587,7 +587,7 @@ if sys.platform != "linux":
 
 has_ipv6: bool
 
-if sys.platform != "darwin" and sys.platform != "linux":
+if sys.platform != "darwin":
     BDADDR_ANY: Final = "00:00:00:00:00:00"
     BDADDR_LOCAL: Final = "00:00:00:FF:FF:FF"
 
@@ -660,16 +660,16 @@ if sys.platform == "darwin":
     PF_SYSTEM: Final[int]
     SYSPROTO_CONTROL: Final[int]
 
-if sys.platform != "darwin" and sys.platform != "linux":
+if sys.platform != "darwin":
     AF_BLUETOOTH: Final[int]
 
-if sys.platform != "win32" and sys.platform != "darwin" and sys.platform != "linux":
+if sys.platform != "win32" and sys.platform != "darwin":
     # Linux and some BSD support is explicit in the docs
     # Windows and macOS do not support in practice
     BTPROTO_HCI: Final[int]
     BTPROTO_L2CAP: Final[int]
     BTPROTO_SCO: Final[int]  # not in FreeBSD
-if sys.platform != "darwin" and sys.platform != "linux":
+if sys.platform != "darwin":
     BTPROTO_RFCOMM: Final[int]
 
 if sys.platform == "linux":

stdlib/socket.pyi

@@ -519,7 +519,7 @@ if sys.platform != "win32":
 
         __all__ += ["SO_BINDTODEVICE"]
 
-if sys.platform != "darwin" and sys.platform != "linux":
+if sys.platform != "darwin":
     from _socket import BDADDR_ANY as BDADDR_ANY, BDADDR_LOCAL as BDADDR_LOCAL, BTPROTO_RFCOMM as BTPROTO_RFCOMM
 
     __all__ += ["BDADDR_ANY", "BDADDR_LOCAL", "BTPROTO_RFCOMM"]
@@ -966,10 +966,10 @@ if sys.platform != "win32":
 
 if sys.platform != "linux":
     __all__ += ["AF_LINK"]
-if sys.platform != "darwin" and sys.platform != "linux":
+if sys.platform != "darwin":
     __all__ += ["AF_BLUETOOTH"]
 
-if sys.platform != "win32" and sys.platform != "darwin" and sys.platform != "linux":
+if sys.platform != "win32" and sys.platform != "darwin":
     from _socket import BTPROTO_HCI as BTPROTO_HCI, BTPROTO_L2CAP as BTPROTO_L2CAP, BTPROTO_SCO as BTPROTO_SCO
 
     __all__ += ["BTPROTO_HCI", "BTPROTO_L2CAP", "BTPROTO_SCO"]
@@ -1131,7 +1131,7 @@ class AddressFamily(IntEnum):
         AF_QIPCRTR = 42
     if sys.platform != "linux":
         AF_LINK = 33
-    if sys.platform != "darwin" and sys.platform != "linux":
+    if sys.platform != "darwin":
         AF_BLUETOOTH = 32
     if sys.platform == "win32" and sys.version_info >= (3, 12):
         AF_HYPERV = 34
@@ -1186,7 +1186,7 @@ if sys.platform == "linux":
 
 if sys.platform != "linux":
     AF_LINK: Final = AddressFamily.AF_LINK
-if sys.platform != "darwin" and sys.platform != "linux":
+if sys.platform != "darwin":
     AF_BLUETOOTH: Final = AddressFamily.AF_BLUETOOTH
 if sys.platform == "win32" and sys.version_info >= (3, 12):
     AF_HYPERV: Final = AddressFamily.AF_HYPERV