IBX-6937: Changed maxFileSize value to float type for Image Field type #1365

Job	Run time
Solr integration tests (7.4)	14m 59s
Solr integration tests (8.0)	11m 52s
Unit tests & SQLite integration tests (7.4)	14m 8s
Solr integration tests (8.1)	11m 45s
Run code style check (8.0)	4m 3s
Unit tests & SQLite integration tests (8.0)	13m 2s
Unit tests & SQLite integration tests (8.1)	12m 30s
MySQL integration tests (7.4)	18m 46s
MySQL integration tests (8.0)	22m 35s
PostgreSQL integration tests (7.4)	27m 48s
PostgreSQL integration tests (8.0)	23m 32s
MySQL integration tests (8.1)	23m 35s
PostgreSQL integration tests (8.1)	45m 4s
	4h 3m 39s

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