Fix restrictive regex validation for descriptions in IDL files

[spywo]

Problem:
The ACT build process was failing when IDL descriptions contained common special characters like ampersand (&) and hash (#), throwing validation errors such as:
"invalid description for method CrsObject.GetName"

Root Cause:
Two regex patterns in componentdefinition.go were overly restrictive:

1. descriptionIsValid() - for method/class/function descriptions
2. errorDescriptionIsValid() - for error descriptions

These patterns excluded commonly used characters that are safe and appropriate for documentation text.

Solution:
Expanded both regex patterns to include additional safe characters:

• & (ampersand) - for logical conjunctions

• (hash/pound) - for identifiers, issue numbers, etc.

• @ (at symbol) - for references, email-like notation
• % (percent) - for percentages, placeholders
• $ (dollar) - for currency, variables
• • (asterisk) - for emphasis, wildcards

[Copilot]

Pull Request Overview

This PR fixes overly restrictive regex validation patterns that were causing ACT build failures when IDL descriptions contained common special characters like ampersand (&) and hash (#). The validation was rejecting legitimate documentation text that included these safe characters.

• Updated two regex patterns to allow additional safe characters in descriptions
• Expanded character sets to include &, #, @, %, $, and * for both method/class descriptions and error descriptions

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[Copilot]

The regex is compiled every time the function is called. Consider moving the compiled regex to a package-level variable or using regexp.MustCompile once during initialization to improve performance.

Suggested change

	var IsValidMethodDescription = regexp.MustCompile("^[a-zA-Z][a-zA-Z0-9_\\\\/+\\-:,.=!?()';&#@%$* |]*$").MatchString
	if (description != "") {
	return IsValidMethodDescription(description);
	if (description != "") {
	return IsValidMethodDescription.MatchString(description);