bgpd: fix evpn mh esi flap remove local routes

bgpd: fix evpn mh esi flap remove local routes

In symmetric routing, when local ESI is down,
the MH peer learnt local mac-ip
prefix is installed into teannt vrf (given l3vni).

When ESI is back up and associated to evi/vni then
remove the local synced mac-ip imported routes from the
tenant vrf as local neigh/arp is present.

Ticket: #3878699
Testing:

peer advertised mac-ip route:
*> [2]:[0]:[48]:[aa:aa:aa:00:00:01]:[32]:[45.0.0.51] RD 27.0.0.4:9
                    27.0.0.4 (spine-1)
                                                           0 64435 65016 i
                    ESI:03:44:38:39:ff:ff:01:00:00:01
                    RT:65016:1000 RT:65016:4000 ET:8 Rmac:44:38:39:ff:ff:16

When local ESI is flapped
torm-11:# ip neigh show 45.0.0.51
45.0.0.51 dev vlan1000 lladdr aa:aa:aa:00:00:01 REACHABLE proto zebra

Before fix:
(The imported route remained in tenant-vrf)
torm-11:# ip route show vrf vrf1 45.0.0.51
45.0.0.51 nhid 257 proto bgp metric 20

After fix:

torm-11# ip route show vrf vrf1 45.0.0.51
torm-11#

trace:
2024/10/11 18:19:29 BGP: [JMP3T-178G8] route [2]:[0]:[48]:[00:02:00:00:00:08]:[32]:[21.1.0.5]
is matched on local esi 03:00:00:00:77:01:04:00:00:0e, uninstall from VRF tenant1 route table

Signed-off-by: Chirag Shah <chirag@nvidia.com>
(cherry picked from commit 3f00709a39ab2fe6f4bbae3d8f4b17baaab2e3dd)