fix: prevent register device api call when identifier is empty

[ami-aman]

Fixes issue for https://secure.helpscout.net/conversation/2267893231/217421/ closes : https://github.com/customerio/opsbugs/issues/3603

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[github-actions[bot]]

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[github-actions[bot]]

# Sample app builds 📱 Below you will find the list of the latest versions of the sample apps. It's recommended to always download the latest builds of the sample apps to accurately test the pull request. --- * java_layout: `aman/fix-empty-identifier (1689261582)` * kotlin_compose: `aman/fix-empty-identifier (1689261593)`

[codecov[bot]]

Codecov Report

Merging #238 (80765f7) into main (3f02263) will decrease coverage by 0.04%. The diff coverage is 0.00%.

@@             Coverage Diff              @@
##               main     #238      +/-   ##
============================================
- Coverage     49.65%   49.62%   -0.04%     
  Complexity      237      237              
============================================
  Files           108      108              
  Lines          2775     2775              
  Branches        362      362              
============================================
- Hits           1378     1377       -1     
  Misses         1282     1282              
- Partials        115      116       +1     

Impacted Files	Coverage Δ
...ava/io/customer/sdk/repository/DeviceRepository.kt	95.34% <0.00%> (-2.33%)	:arrow_down:

[github-actions[bot]]

Build available to test Version: aman-fix-empty-identifier-SNAPSHOT Repository: https://s01.oss.sonatype.org/content/repositories/snapshots/

[ami-aman]

Closing this pull request as another PR handles this fix.