Consistent timestamps throughout the app

[joanagmaia]

Changes proposed ✍️

What

🤖 Generated by Copilot at f365c5f

This pull request fixes some bugs and adds some features related to date filters and dashboard data. It ensures that the date filters use UTC time and include today's data, and that the dashboard and widget components use consistent and accurate filter options and query parameters. It also simplifies and cleans up some code in various components and modules, and adds some customization options for the chart display. It affects files in the frontend/src/modules and frontend/src/shared/modules directories, as well as the frontend/src/modules/dashboard/dashboard.cube.js file.
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🤖 Generated by Copilot at f365c5f

Oh we're the coders of the dashboard, and we work with skill and speed
We fix the bugs and add the features, and we use the filterQueryService
We make the dates and pivots right, and we simplify the code
So heave away and pull the rope, and watch the data load

Why

How

🤖 Generated by Copilot at f365c5f

• Add and use filterQueryService to convert filter objects to query strings for API requests (link, link, link, link, link, link, link, link)
• Modify date filter options to use UTC time and subtract one less day from moment objects to include today's data (link, link, link, link, link, link)
• Simplify date range calculation by removing unnecessary conditional check for granularity and using period value directly (link, link, link, link, link, link)
• Modify filter objects in dashboard store actions to use UTC time and subtract one less day from moment objects, and set start and end of day for date range (link, link, link, link, link, link)
• Modify date range for widget queries to use UTC time and subtract one less day from moment objects (link, link, link, link, link, link)
• Modify dateApiFilterRenderer function to use UTC time for moment objects (link)
• Add pivotModifier prop to widget-area component and use it to remove date dimension from pivot array for chart display (link, link, link, link, link)
• Replace newAndActive filter with allOrganizations filter in dashboard-organizations component (link)
• Replace newAndActive filter with allMembers filter in dashboard-members component (link)
• Define allConversationsFilter, allActivitiesFilter, allMembers, and allOrganizations as computed properties for dashboard components (link, link, link, link)
• Remove unused imports and functions from widget components (link, link, link)
• Add empty lines to dashboard store actions file for readability and formatting (link, link, link)

Checklist ✅

• Label appropriately with Feature, Improvement, or Bug.
• Add screehshots to the PR description for relevant FE changes
• New backend functionality has been unit-tested.
• API documentation has been updated (if necessary) (see docs on API documentation).
• Quality standards are met.