Review metrics for all types of session tables & join table

[naleeha]

Review the metrics for tree session table, input session table, join table to confirm they are as expected and consistent

Join table + Tree session doesn't directly hold table data, but holds the different representation & fetch the data from its base tales.
We can either reflect the metrics for these to include stats from the base table or always be 0 as it does not hold the data directly.

Need to check how input session table metrics look like

Join table example - shows 0 update count but some update per second

Tree session table example - shows 0 update count and 0 update per second