[to dev/1.3] fix: prevent NPE when isFinished() is called before DataDriver init

[shuwenwei]

(cherry picked from (#17440))

[sonarqubecloud]

Quality Gate passed

Issues
3 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

❌ Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 41.51%. Comparing base (28c4e02) to head (1a0fe5a).
⚠️ Report is 1 commits behind head on dev/1.3.

Files with missing lines	Patch %	Lines
.../db/queryengine/execution/driver/SchemaDriver.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             dev/1.3   #17441   +/-   ##
==========================================
  Coverage      41.51%   41.51%           
  Complexity       227      227           
==========================================
  Files           3596     3596           
  Lines         236857   236859    +2     
  Branches       28677    28677           
==========================================
+ Hits           98332    98333    +1     
- Misses        138525   138526    +1     

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