Rename kcl Value to Expr (#3360)

Rename kcl's Value to Expr

As Jon pointed out, kcl's `Value` enum is actually an expression.
"2+2" isn't a value, it's an expression, which can compute a value.
So I renamed it `Expr`.

src/components/Toolbar/setAngleLength.tsx

@@ -1,6 +1,6 @@
 import { toolTips } from 'lang/langHelpers'
 import { Selections } from 'lib/selections'
-import { BinaryPart, Program, Value } from '../../lang/wasm'
+import { BinaryPart, Program, Expr } from '../../lang/wasm'
 import {
   getNodePathFromSourceRange,
   getNodeFromPath,
@@ -44,7 +44,7 @@ export function angleLengthInfo({
   )
 
   const nodes = paths.map((pathToNode) =>
-    getNodeFromPath<Value>(kclManager.ast, pathToNode, 'CallExpression')
+    getNodeFromPath<Expr>(kclManager.ast, pathToNode, 'CallExpression')
   )
   const _err1 = nodes.find(err)
   if (err(_err1)) return _err1