fix: update variable declarations and cache handling

This commit involves refactoring code in Products.js by updating 'var' to 'let' or 'const' for
proper scoping and better readability. It also introduces a new variable 'inAdministration' to
handle specific conditions for QUIQQER's administrative state and modifies the condition for using
cached data, considering 'inAdministration'. Expect no changes in functionality or behavior of the
software with these changes.