bugfix: if add configListener but dataId not exist, it will throw NPE

[slievrly]

Signed-off-by: slievrly slievrly@163.com

Ⅰ. Describe what this PR did

bugfix: if add configListener but dataId not exist, it will throw NPE

Ⅱ. Does this pull request fix one issue?

fix #2049

Ⅲ. Why don't you add test cases (unit test/integration test)?

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[codecov-io]

Codecov Report

Merging #2050 into develop will not change coverage.
The diff coverage is 100%.

@@            Coverage Diff             @@
##             develop    #2050   +/-   ##
==========================================
  Coverage      55.55%   55.55%           
+ Complexity      2524     2522    -2     
==========================================
  Files            445      445           
  Lines          14848    14848           
  Branches        1751     1751           
==========================================
  Hits            8249     8249           
+ Misses          5837     5835    -2     
- Partials         762      764    +2

Impacted Files	Coverage Δ	Complexity Δ
...c/main/java/io/seata/config/FileConfiguration.java	36.79% <100%> (ø)	6 <0> (ø)	⬇️
...in/java/io/seata/server/session/GlobalSession.java	84.54% <0%> (-0.49%)	67% <0%> (-1%)
...o/seata/server/coordinator/DefaultCoordinator.java	48.01% <0%> (-0.4%)	27% <0%> (-1%)
...server/store/file/FileTransactionStoreManager.java	57.14% <0%> (+0.63%)	29% <0%> (ø)	⬇️

[l81893521]

LGTM

[lovepoem]

LGTM