fix(core): declare client module resolution before plugin setup

[morinokami]

Description

A plugin that registers a dock with a bare-specifier client script inside devtools.setup() (e.g. action: { importFrom: 'my-plugin/devtools-action' }, as the Kit docs show) gets a false DF8111 warning ("the script will fail to load") on the dev server, although the script loads fine through /@id/.

The hub checks staticConfig.dock.clientModuleResolution inside docks.register(), but core only declared it via initHub() in createDevToolsHub, which runs after createDevToolsContext has already run every plugin's setup().

This declares the template in createDevToolsContext, before any dock registers. It stays dev-server only, so build / standalone keep warning as before. initHub still receives the same value, which covers contexts assembled elsewhere.

Linked Issues

Mentioned in passing in devframes/devframe#289 ("fires even in plain Vite, where the dock works fine"), which was closed without addressing it.

Additional context

• Reproducible with vite-plugin-vue-tracer (viteDevtools: true): published 0.7.5 prints 1 warning, this branch prints 0. The advertised clientModuleResolution and the /@id/… response (200) are identical in both.
• The added test fails without the fix.

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commit: f836a78