fix(react): replace React.lazy with synchronous createComponent in Re…

[Anexus5919]

React wrappers in baklava-react.ts were using React.lazy() + customElements.whenDefined() to create component wrappers. React.lazy always suspends on the first render, triggering the nearest <Suspense> fallback and causing a visible UI flash/blink even when the custom element is already registered.

This PR replaces the lazy pattern with direct ES module imports and synchronous createComponent() calls. The @customElement decorator in each component file registers the element as a side-effect of the import, guaranteeing elementClass is defined before createComponent accesses it.

Before (causes suspension):

export const BlButton = React.lazy(() =>
  customElements.whenDefined("bl-button").then(() => ({
    default: createComponent({
      elementClass: customElements.get("bl-button"),
      ...
    })
  }))
);

After (synchronous, no flash):

import BlButtonElement from "./components/button/bl-button";

export const BlButton = createComponent({
  elementClass: BlButtonElement,
  ...
});

Benefits

• No UI flash - components render synchronously on first mount, no Suspense fallback triggered
• No race conditions - ES module evaluation order guarantees element registration before createComponent() runs
• Tree-shakeable - only imported components are bundled by the consumer
• Simpler consumer API - consumers no longer need a separate import '@trendyol/baklava' side-effect import when using React wrappers

Changed files

• cemPlugins/generateReactExports.js - updated generator to emit direct imports and synchronous createComponent() calls
• cemPlugins/utils/resolveFilePath.js - extracted resolveImportPath() utility for raw import paths

Checklist

• I have added test cases for this feature
• I have updated the documentation (if necessary)

Fixes #1171

[Anexus5919]

@Enes5519 @ergenekonyigit
Kindly review this PR when you get a chance. Thanks!