[system] Fix typo to avoid infinite recursion in function call.

[michael-land]

closes #41615

the previous version cause infinite recursion

export function private_safeEmphasize(color, coefficient, warning) {
  try {
    //    return private_safeEmphasize(color, coefficient);
    return emphasize(color, coefficient);
  } catch (error) {
    if (warning && process.env.NODE_ENV !== 'production') {
      console.warn(warning);
    }
    return color;
  }
}

• I have followed (at least) the PR section of the contributing guide.

[mui-bot]

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[siriwatknp]

👍 Thanks a lot for the fix!