JSON viewtool not working properly when text responses are returned

User Story

As a user i want to be able to use the JSON viewtool for apis returning text responses as well, at the moment when an api returns text response the JSON viewtool doesn't work correctly and breaks, the internal exception is as follows

com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot construct instance of `java.util.HashMap` (although at least one Creator exists): no String-argument constructor/factory method to deserialize from String value ('{"data":{"homeLoanProduct":{"loanType":"Variable","productDataId":1111,"securityType":"ResidentialProperty","product":{"productDataId":1111,"institutionId":XXXX}}}}')
 at [Source: REDACTED (`StreamReadFeature.INCLUDE_SOURCE_IN_LOCATION` disabled); line: 1, column: 1]

https://github.com/user-attachments/assets/5271c23b-f905-4186-b410-07053266e4ac

Acceptance Criteria

JSON viewtool must support for text responses as well

Proposed Objective

Customer Support

Proposed Priority

Priority 2 - Important

External Links... Slack Conversations, Support Tickets, Figma Designs, etc.

https://helpdesk.dotcms.com/a/tickets/32184

Assumptions & Initiation Needs

No response

Quality Assurance Notes & Workarounds

No response

Sub-Tasks & Estimates

No response

Start by locating the JSON viewtool handling for API responses and reproduce the failure with a text response matching the issue's Jackson exception. Trace how the text response is processed, then verify that the JSON viewtool supports text responses without breaking and that the reported deserialization exception no longer occurs.