fix: wrong counts

[ChaituVR]

Fixes https://github.com/snapshot-labs/workflow/issues/341

Summary:

Inside loadSpacesMetrics, we were using previous counts if metrics doesn't contain certain properties

spacesMetadata[space].counts = {
    ...spacesMetadata[space].counts,
    ...metrics
};

• If there are no active proposals then getProposals return an object without activeProposals property
• If there are no active proposals / recent proposals, then getProposals returns empty object
• In these cases, it will show previous counts
• This PR fixes that and uses new counts

How to test:

• Create a proposal that ends in 5 mins
• Try the following query

{
  space(id: "thanku.eth") {
    id
    activeProposals
    proposalsCount1d
    proposalsCount7d
    proposalsCount30d
  }
}

• activeProposals should be 1
• Once the proposal end activeProposals should be 0

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src/helpers/spaces.ts:269

• The current implementation overwrites the entire counts object, potentially losing other count properties that are not included in the metrics. Consider merging the new metrics with the existing counts object to preserve all properties.

spacesMetadata[space].counts = {

[bonustrack]

utACK