Simplify logical sizing utility theme namespaces (#19625)

Update inline-size and block-size utilities to only read from --spacing
and --container theme keys, removing backwards-compat references to
--width, --height, --min-width, --min-height, --max-width, and
--max-height.

Since these are new utilities with no backwards compatibility concerns,
the simpler approach is preferred:
- inline/min-inline/max-inline: --spacing, --container
- block/min-block/max-block: --spacing only

https://claude.ai/code/session_01WhrjmutxsLP753VUtFy24S

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## Summary

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## Test plan

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Co-authored-by: Claude <noreply@anthropic.com>

packages/tailwindcss/src/utilities.test.ts

@@ -3842,7 +3842,7 @@ test('inline-size', async () => {
       css`
         @theme {
           --spacing-4: 1rem;
-          --width-xl: 36rem;
+          --container-xl: 36rem;
         }
         @tailwind utilities;
       `,
@@ -3865,7 +3865,7 @@ test('inline-size', async () => {
   ).toMatchInlineSnapshot(`
     ":root, :host {
       --spacing-4: 1rem;
-      --width-xl: 36rem;
+      --container-xl: 36rem;
     }
 
     .inline-1\\/2 {
@@ -3917,7 +3917,7 @@ test('inline-size', async () => {
     }
 
     .inline-xl {
-      inline-size: var(--width-xl);
+      inline-size: var(--container-xl);
     }"
   `)
   expect(

packages/tailwindcss/src/utilities.ts

@@ -1135,12 +1135,12 @@ export function createUtilities(theme: Theme) {
   staticUtility(`max-block-none`, [['max-block-size', 'none']])
 
   for (let [name, namespaces, property] of [
-    ['inline', ['--width', '--spacing', '--container'], 'inline-size'],
-    ['min-inline', ['--min-width', '--spacing', '--container'], 'min-inline-size'],
-    ['max-inline', ['--max-width', '--spacing', '--container'], 'max-inline-size'],
-    ['block', ['--height', '--spacing'], 'block-size'],
-    ['min-block', ['--min-height', '--height', '--spacing'], 'min-block-size'],
-    ['max-block', ['--max-height', '--height', '--spacing'], 'max-block-size'],
+    ['inline', ['--spacing', '--container'], 'inline-size'],
+    ['min-inline', ['--spacing', '--container'], 'min-inline-size'],
+    ['max-inline', ['--spacing', '--container'], 'max-inline-size'],
+    ['block', ['--spacing'], 'block-size'],
+    ['min-block', ['--spacing'], 'min-block-size'],
+    ['max-block', ['--spacing'], 'max-block-size'],
   ] as [string, ThemeKey[], string][]) {
     spacingUtility(name, namespaces, (value) => [decl(property, value)], {
       supportsFractions: true,