Fix HideRunButton/ShowRunButton to persist state across layout updates

[Copilot]

HideRunButton() and ShowRunButton() only set _RunButton.Visible, but RdlViewer_Layout() overrides button visibility based on the _ShowParameters field. This causes button state to revert on any layout recalculation.

Changes

• HideRunButton() now sets _ShowParameters = false before hiding the button
• ShowRunButton() now sets _ShowParameters = true before showing the button
• Both methods call RdlViewer_Layout(this, null) to apply changes immediately

This matches the pattern used by the ShowParameters property setter.

public void HideRunButton()
{
    _ShowParameters = false;
    _RunButton.Visible = false;
    RdlViewer_Layout(this, null);
}

public void ShowRunButton()
{
    _ShowParameters = true;
    _RunButton.Visible = true;
    RdlViewer_Layout(this, null);
}

Original prompt

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This section details on the original issue you should resolve

<issue_title>RdlViewer methods(Hide/ShowRunButton) not working!</issue_title>
<issue_description>As we know, the methods(ShowRunButton and HideRunButton) control the visibility of 'Run Report' Button.
But any method is not working.

For fixing the problem, add some codes in the source 'RdlViewer.cs'.

(Line 2145)
public void HideRunButton()
{
_ShowParameters = false; //<- Add this Line
_RunButton.Visible = false;
}

(Line 2150)
public void ShowRunButton()
{
_ShowParameters = true; //<- Add this Line
_RunButton.Visible = true;
}

I hope that this issue is resolved ASAP!</issue_description>

Comments on the Issue (you are @copilot in this section)

@majorsilence Please send a pull request with the fix and I'll merge it.

Fixes #179

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