Fix the additional sequence kind options

[hengfengli]

This fixes two issues:

• The sequence option default is not added correctly when exporting sequences.
• We should use tableName instead of tableSchema when calling GET_TABLE_COLUMN_IDENTITY_STATE.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 46.84%. Comparing base (6638feb) to head (a019dbd).
Report is 3 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #2146      +/-   ##
============================================
+ Coverage     46.75%   46.84%   +0.09%     
- Complexity     3978     4007      +29     
============================================
  Files           873      874       +1     
  Lines         51871    51987     +116     
  Branches       5429     5441      +12     
============================================
+ Hits          24251    24355     +104     
- Misses        25894    25895       +1     
- Partials       1726     1737      +11     

Components	Coverage Δ
spanner-templates	68.78% <100.00%> (+0.14%)	⬆️
spanner-import-export	65.59% <100.00%> (ø)
spanner-live-forward-migration	76.50% <ø> (+0.01%)	⬆️
spanner-live-reverse-replication	78.66% <ø> (+0.26%)	⬆️
spanner-bulk-migration	87.87% <ø> (+<0.01%)	⬆️

Files with missing lines	Coverage Δ
...oud/teleport/spanner/AvroSchemaToDdlConverter.java	83.56% <100.00%> (ø)

... and 7 files with indirect coverage changes