[Fix] Fix wrong ic13 textspotting split data; add lexicons to ic13, ic15 and totaltext

[gaotongxiao]

No description provided.

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.01 ⚠️

Comparison is base (82f81ff) 90.13% compared to head (c1e5189) 90.12%.

❗ Current head c1e5189 differs from pull request most recent head 5000045. Consider uploading reports for the commit 5000045 to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##           dev-1.x    #1758      +/-   ##
===========================================
- Coverage    90.13%   90.12%   -0.01%     
===========================================
  Files          190      190              
  Lines        11128    11124       -4     
  Branches      1567     1566       -1     
===========================================
- Hits         10030    10026       -4     
  Misses         790      790              
  Partials       308      308              

Flag	Coverage Δ
unittests	90.12% <100.00%> (-0.01%)	⬇️

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Impacted Files	Coverage Δ
mmocr/datasets/samplers/batch_aug.py	100.00% <100.00%> (ø)

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