Fix error when connection request is received (askar, public invitation)

[baegjae]

This PR fixes error when connection request is received with public invitation under askar

Environment

• connections/1.0 protocol
• public invitation
• askar

Problem

Faber (invitation creator) encountered error below, when connection request was received.

2021-11-22 17:39:38,849 aries_cloudagent.core.dispatcher ERROR Handler error: Dispatcher.handle_message
Traceback (most recent call last):
  File "/Users/baegjae/src/aries-cloudagent-python/aries_cloudagent/core/dispatcher.py", line 197, in handle_message
    await handler(context, responder)
  File "/Users/baegjae/src/aries-cloudagent-python/aries_cloudagent/protocols/connections/v1_0/handlers/connection_request_handler.py", line 41, in handle
    await mgr.receive_request(
  File "/Users/baegjae/src/aries-cloudagent-python/aries_cloudagent/protocols/connections/v1_0/manager.py", line 592, in receive_request
    my_info = await wallet.create_local_did(DIDMethod.SOV, KeyType.ED25519)
  File "/Users/baegjae/src/aries-cloudagent-python/aries_cloudagent/wallet/askar.py", line 199, in create_local_did
    await self._session.handle.insert_key(
AttributeError: 'NoneType' object has no attribute 'insert_key'

wallet was inactive (=handle was None) when creating local did.

Fix

This PR make wallet active to create local did.

Signed-off-by: Ethan Sung baegjae@gmail.com

[codecov-commenter]

Codecov Report

Merging #1508 (b4a7666) into main (c536635) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #1508   +/-   ##
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  Coverage   95.79%   95.79%           
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  Files         509      509           
  Lines       30983    30985    +2     
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+ Hits        29681    29683    +2     
  Misses       1302     1302