Property aggregate query causes panic if the call to BatchGetAssetPropertyAggregatesPagesWithContext needs to be paged

[kevinwcyu]

What happened:

Run a property aggregate query with resolution set to auto and increase the time range until it causes the call to BatchGetAssetPropertyAggregatesPageAggregation needs to be paged.

This causes a panic because there is a mismatch of expectations when building the frames because we assume the success entries is flat with each item representing a single asset

iot-sitewise-datasource/pkg/framer/property_aggregate.go

Lines 109 to 110 in 9ea9528

	Resolution: aws.StringValue(a.Request.Entries[i].Resolution),
	Aggregates: aws.StringValueSlice(a.Request.Entries[i].AggregateTypes),

See original comment on this issue here #179 (comment)

What you expected to happen:

How to reproduce it (as minimally and precisely as possible):

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• User OS & Browser:
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[sarahzinger]

Moving this to Next since I see a user is running into this issue

[kevinwcyu]

this should be fixed by #194 as well. will move this back to waiting for now.