H-6683: Add value column to parameter table; more slideover CSS fixes

[CiaranMn]

🌟 What is the purpose of this PR?

1. Adds a 'value' column to the planning parameter table, to help understand the scale of material affected by the parameter (whether procured, produced, shipped, etc)
2. Fix further styling regressions caused by PandaCSS changes, including slideover animation

Pre-Merge Checklist 🚀

🚢 Has this modified a publishable library?

This PR:

• does not modify any publishable blocks or libraries, or modifications do not need publishing

📜 Does this require a change to the docs?

The changes in this PR:

• require changes to docs which are made as part of this PR

🕸️ Does this require a change to the Turbo Graph?

The changes in this PR:

• do not affect the execution graph

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PR Summary

Medium Risk
Touches data contract versioning (1.2) and new financial display logic on planning tables; styling/animation changes are localized but user-visible across site overview and slide-overs.

Overview
Adds period material value (quantity through the step × unit cost for the selected time range, independent of outlier filters) to the site planning parameters table and step detail metrics, with sortable Value column and user docs explaining the metric.

Introduces MaterialValueData / computePeriodMaterialValue, wires periodMaterialValue into planning rows, and bumps several supply-chain artifact types to schema 1.2 (including production schedule schema_version split for 1.1 vs 1.2 in Zod).

Fixes PandaCSS regressions by splitting active/inactive styles (explicit inactive classes for segmented controls, docs nav, filter triggers, settings collapse) and refactoring the slide-over so the positioner stays full-viewport while only the panel animates right (with new tests). Minor step-detail tweaks: procurement secondary timing badge copy and removal of the median vs previous period cell from key metrics.

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