[Improve][SeaTunnel-Web] Unified use of JSONUtils #630

Job	Run time
Dead links	11s
Code style	20s
License header	34s
Sanity check results	1s
Dependency licenses	2m 49s
Integration Test (8, ubuntu-latest)	2m 7s
Build (8, ubuntu-latest)	4m 20s
Integration Test (11, ubuntu-latest)	2m 18s
Unit Test (8, ubuntu-latest)	2m 15s
Build (8, windows-latest)	7m 17s
Unit Test (8, windows-latest)	6m 47s
Build (11, ubuntu-latest)	3m 10s
Unit Test (11, ubuntu-latest)	2m 19s
Build (11, windows-latest)	3m 48s
Unit Test (11, windows-latest)	4m 18s
	42m 34s

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