Update RecordTimelineDataProvider.cls

[ArunSharma83]

Archived Task details are not coming in the detail section of Activity Time line, It might be be due to the query is not pulling all rows is Object API name isn't Activity History which in this case might be TaskRelation.

[salesforce-cla[bot]]

Thanks for the contribution! Before we can merge this, we need @ArunSharma83 to sign the Salesforce Inc. Contributor License Agreement.

[rjayagopal]

@ArunSharma83 once the cla is signed, do a dummy commit, that will retrigger the cla validation and clears the error.