Task Parameters Defaults are not set in test console

[Stan-Stani]

For example, getPRDetails does not default to true when using the test console.

AzurePipelines/Extensions/XplatGenerateReleaseNotes/readme.md

Line 405 in aa1b2d8

| getPRDetails | If true all PRs in the project, or organisation, will be scanned for associations. There is an option to disable this feature as this scan is slow and not always required (Default true) |

This discrepancy makes it difficult to use the test console to reproduce the exact setup of the task as it exists in an Azure Pipeline and vice-versa.
 
The defaults set in the test console should either match the Task Parameters described in the wiki, or the fact they are not set should be made explicit.