Search custom property using Search APIs

[harshach]

Describe the bug
Ability to search for custom properties using search apis
if I filter using my custom property dcp duration = 2A , I've no result. I should have at least one result (see picture below). It works when i use the filter dcp_duration contains 2

To Reproduce

Screenshots or steps to reproduce

Expected behavior
A clear and concise description of what you expected to happen.

Version:

• OS: [e.g. iOS]
• Python version:
• OpenMetadata version: [e.g. 0.8]
• OpenMetadata Ingestion package version: [e.g. openmetadata-ingestion[docker]==XYZ]

Additional context
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