Eliminate duplicate condition check in buildSnapshot

[Copilot]

The shrinkToContent condition was evaluated twice in the same function—once for the baseWidth calculation and again when defining the variable itself. This creates duplication and increases risk of inconsistency.

Changes:

• Extract shrinkToContent variable definition to occur once before baseWidth calculation
• Reuse the extracted variable in the conditional logic

// Before
let baseWidth;
if (opts && opts.widthStrategy === 'shrink-to-content') {
  baseWidth = Math.max(el.scrollWidth || 0, el.offsetWidth || 0, 1);
  // ...
}
const clone = el.cloneNode(true);
const shrinkToContent = !!(opts && opts.widthStrategy === 'shrink-to-content');

// After
const shrinkToContent = !!(opts && opts.widthStrategy === 'shrink-to-content');
let baseWidth;
if (shrinkToContent) {
  baseWidth = Math.max(el.scrollWidth || 0, el.offsetWidth || 0, 1);
  // ...
}
const clone = el.cloneNode(true);

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