Fixed the bug where tooltips for skills and tools are not displayed on the character sheet

Fixed adding references for skills and tools during the preparation of the rendering context for the details tab.

Root cause: key in for..of statement actually was an index, not a real key.

If for..of is preferable, you can ignore this PR and use

for (const entry of context.skills.concat(context.tools)) { 
// the same code as in PR
}