Fix ATT_FIND_INFORMATION_RSP containing only one entry

In aosp/433530 bug was introduced that caused ATT_FIND_INFORMATION_RSP
to contain only one attribute. This patch fixes that - attributes are
iterated until the end handle, or mismatching UUID length is reached.

Test: manual, pair with any client capable device, observe service
discovery packets exchagned
Flag: exempt, short and trivial
Bug: 363236113
Change-Id: I9f0c174681c800e4624e54c1426b251f9614557c