packages/network-explorer: Threads not showing on Common explorer

[raykyri]

Also noticing that table data don't get reset correctly when moving between a table and one is empty - try toggling between comments and threads, or thread_reactions and threads

[rjwebb]

It looks like we get this error when requesting the threads from the API: {"error":"Error: internal error - invalid threads/topic value (expected float)"}. I'm going to try to reproduce this locally...

[rjwebb]

Looks like there are two things going on here:

• The /models/:model endpoint for threads is failing with {"error":"Error: internal error - invalid threads/topic value (expected float)"}. This is because the topic column in the threads table has type "number" which is being stored as a number, however in decodePrimitiveValue the code expects this to be stored as a string. Fix here: packages/modeldb-pg - fix returning float columns  #431
• When switching between healthy tables and unhealthy tables, the rows from the healthy table persists. Fix here: packages/network-explorer - fix bug when changing tables #430