Make parameters not used for budget calculation read-only

.../components/variables/NonVariableReferredParameter.svelte

...components/variables/VariableReferredNodeParameter.svelte

...ib/components/variables/VariableReferredParameters.svelte

...omponents/variables/VariableReferredScaleAtInstant.svelte

...omponents/variables/VariableReferredScaleParameter.svelte

...omponents/variables/VariableReferredValueParameter.svelte

...lib/components/variables/VariableReferredValueView.svelte

src/lib/values.ts

src/lib/variables.ts

src/routes/+layout.svelte

src/routes/+page.svelte

src/routes/budget/+server.ts