fix(ResourcesLib): prevent value calculation from overwriting stored resource data

[DevAryanPro]

Fixed critical bug in ResourcesLib where value() method with enabled growth
was overwriting actual stored resource values with calculated growth values.

Changes:

• Modified value() method to use _calcValue() directly instead of getValue()
• This prevents the internal _set() call that was corrupting stored data
• Growth calculations now return computed values without modifying base storage

Impact:

• Resolves issue where resource values would reset to 0 after growth calculations
• Ensures add() operations work correctly with growth features enabled
• Maintains accurate base value storage while providing correct calculated values

Test results before fix:

• Old Value: 600, Added: 100, New Value: 0 ❌
• After fix: Values now persist correctly through operations