Avoid some unnecessary value tracking deoptimizations

[lukastaegert]

This PR contains:

• bugfix
• feature
• refactor
• documentation
• other

Are tests included?

• yes (bugfixes and features will not be merged without tests)
• no

Breaking Changes?

• yes (breaking changes will not be merged unless absolutely necessary)
• no

List any relevant issue numbers:

Description

This will slightly improve tree-shaking analysis by avoiding "untracked" values in some situations. Example:

// input
let foo = false;
toggleFoo();
const obj = {};
const unusedObj = foo ? obj : {};

if (obj.someProperty) console.log('should not happen');
else console.log('all fine');

function toggleFoo() {
	foo = true;
}

// old output
const obj = {};

if (obj.someProperty) console.log('should not happen');
else console.log('all fine');

// new output
console.log('all fine');

Probably not much, but every little bit counts, this was the result of reviewing the existing value caching behaviour.

[codecov]

Codecov Report

Merging #3278 into master will increase coverage by 0.35%.
The diff coverage is 98.55%.

@@            Coverage Diff             @@
##           master    #3278      +/-   ##
==========================================
+ Coverage   92.76%   93.12%   +0.35%     
==========================================
  Files         170      170              
  Lines        5945     5960      +15     
  Branches     1797     1781      -16     
==========================================
+ Hits         5515     5550      +35     
+ Misses        225      219       -6     
+ Partials      205      191      -14

Impacted Files	Coverage Δ
src/ast/nodes/BinaryExpression.ts	97.22% <ø> (ø)	⬆️
src/ast/nodes/Property.ts	92.3% <100%> (+8.67%)	⬆️
src/ast/nodes/LogicalExpression.ts	98.66% <100%> (+2.95%)	⬆️
src/ast/nodes/CallExpression.ts	98.16% <100%> (+2.2%)	⬆️
src/ast/nodes/MemberExpression.ts	98.24% <100%> (+2.63%)	⬆️
src/ast/utils/PathTracker.ts	100% <100%> (ø)	⬆️
src/ast/nodes/IfStatement.ts	100% <100%> (ø)	⬆️
src/ast/nodes/ConditionalExpression.ts	96.05% <100%> (+1.45%)	⬆️
src/ast/nodes/ObjectExpression.ts	91.83% <93.93%> (+4.85%)	⬆️

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