Entity search returns incorrect results for Time/LocalTime/OffsetTime

[vyacheslav-pushkin]

Environment

• Platform version: 7.2-SNAPSHOT
• Addon version: 7.2-SNAPSHOT
• Database: PostgreSQL

Description of the bug or enhancement

NOTE: Likely to be caused by a Platform issue as Generic UI demonstrates same behavior: cuba-platform/cuba#2705

1. Create an instance of an entity having a time attribute (here and below "time" refers to Time, LocalTime or OffsetTime). Populate the time attribute with some value, e.g. "11:57".

2. Send GET rest/v2/entities/{entity name}/search?{params} where params contains a filter with value

{"conditions":[{"property":"{property name}","operator":"=","value":"11:57:00"}]}

Expected result:

Result contains the record.

Actual result:

Result doesn't contain the record.

Changing operator to ">" results in the record being returned.