Set Browsing bit to 0 in PbapSupportedFeatures

PbapClient currently doesn't support browsing. This CL sets the bit to
zero in PbapSupportedFeatures to accurately reflect the functionalities.

Bug: 139624050

Test: Check the snoop/HCI logs. Look under the OBEX protocol header of
the connection request packet for PBAP. Under Application Parameters >
PbapSupportedFeatures, verify the Browsing bit is now 0.

Change-Id: I2fcd959abf6aba178cd5fffb2f6e69cf1863fd89
Merged-In: I2fcd959abf6aba178cd5fffb2f6e69cf1863fd89
(cherry picked from commit 522d6cb1)