fix: space quota not initial set

[AlexAndBear]

Description

Related Issue

• Fixes Setting custom space quota results in displaying no restrictions #561

How Has This Been Tested?

• test environment:
• test case 1:
• test case 2:
• ...

Types of changes

• Bugfix
• Enhancement (a change that doesn't break existing code or deployments)
• Breaking change (a modification that affects current functionality)
• Technical debt (addressing code that needs refactoring or improvements)
• Tests (adding or improving tests)
• Documentation (updates or additions to documentation)
• Maintenance (like dependency updates or tooling adjustments)

[Copilot]

Pull Request Overview

This PR fixes the initialization issue of the space quota in the QuotaModal component.

• Removed the onMounted lifecycle hook and now assigns the initial quota value directly.
• Reordered composable imports for consistency.

Comments suppressed due to low confidence (1)

packages/web-pkg/src/components/Spaces/QuotaModal.vue:182

• Removing the onMounted hook may cause the assignment to 'selectedOption' to occur before 'props.spaces' is fully initialized. Consider reintroducing onMounted to ensure that the quota is set after the component is mounted.

selectedOption.value = props.spaces[0]?.spaceQuota?.total || 0

[kulmann]

Special thank you for the script setup changes 🥇