fix: decimal to real

[RolandKrummenacher]

🛠️ Description

Fix: Type conversion issues in realtime dashboard

Fixes #1881

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📋 Checklist

🔬 How did you test this change?

• 🤏 Lint tests
• 🤞 PS -WhatIf / az validate
• 👍 Manually deployed + verified
• 💪 Unit tests
• 🙌 Integration tests

🙋‍♀️ Do any of the following that apply?

• 🚨 This is a breaking change.
• 🤏 The change is less than 20 lines of code.

📑 Did you update docs/changelog.md?

• ✅ Updated changelog (required for dev PRs)
• ➡️ Will add log in a future PR (feature branch PRs only)
• ❎ Log not needed (small/internal change)

📖 Did you update documentation?

• ✅ Public docs in docs (required for dev)
• ✅ Internal dev docs in src (required for dev)
• ➡️ Will add docs in a future PR (feature branch PRs only)
• ❎ Docs not needed (small/internal change)

[Copilot]

Pull request overview

This PR fixes type conversion issues in KQL queries within the FinOps hub realtime dashboard by replacing deprecated decimal type references with real type references, addressing issue #1881.

Key changes:

• Updated type conversion functions from todecimal() to toreal() for initialization of zero values
• Changed decimal(0) literals to real(0) in conditional expressions throughout multiple queries

[Copilot]

@RolandKrummenacher I've opened a new pull request, #1901, to work on those changes. Once the pull request is ready, I'll request review from you.

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[allcontributors]

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