Fix audit failures in TerminalCore (#15002)

## Summary of the Pull Request

This fixes a couple of audit failures in `TerminalCore` where the
compiler was complaining about functions that should have been declared
as `noexcept`.

These failures have actually existed for a while, but you'd only see
them if you ran the audit build locally. They only recently started
showing up on the CI build server - I'm guessing because the compiler
there has now been upgraded.

## Validation Steps Performed

Compiled the audit build locally and it no longer fails.

Author: j4james

src/cascadia/TerminalCore/Terminal.cpp

@@ -978,7 +978,7 @@ catch (...)
 // Arguments:
 // - vkey: The virtual key code.
 // - scanCode: The scan code.
-void Terminal::_StoreKeyEvent(const WORD vkey, const WORD scanCode)
+void Terminal::_StoreKeyEvent(const WORD vkey, const WORD scanCode) noexcept
 {
     _lastKeyEventCodes.emplace(KeyEventCodes{ vkey, scanCode });
 }

src/cascadia/TerminalCore/Terminal.hpp

@@ -283,7 +283,7 @@ class Microsoft::Terminal::Core::Terminal final :
     void SelectHyperlink(const SearchDirection dir);
 
     using UpdateSelectionParams = std::optional<std::pair<SelectionDirection, SelectionExpansion>>;
-    UpdateSelectionParams ConvertKeyEventToUpdateSelectionParams(const ControlKeyStates mods, const WORD vkey) const;
+    UpdateSelectionParams ConvertKeyEventToUpdateSelectionParams(const ControlKeyStates mods, const WORD vkey) const noexcept;
     til::point SelectionStartForRendering() const;
     til::point SelectionEndForRendering() const;
     const SelectionEndpoint SelectionEndpointTarget() const noexcept;
@@ -411,7 +411,7 @@ class Microsoft::Terminal::Core::Terminal final :
     static WORD _VirtualKeyFromCharacter(const wchar_t ch) noexcept;
     static wchar_t _CharacterFromKeyEvent(const WORD vkey, const WORD scanCode, const ControlKeyStates states) noexcept;
 
-    void _StoreKeyEvent(const WORD vkey, const WORD scanCode);
+    void _StoreKeyEvent(const WORD vkey, const WORD scanCode) noexcept;
     WORD _TakeVirtualKeyFromLastKeyEvent(const WORD scanCode) noexcept;
 
     int _VisibleStartIndex() const noexcept;

src/cascadia/TerminalCore/TerminalSelection.cpp

@@ -417,7 +417,7 @@ void Terminal::SelectHyperlink(const SearchDirection dir)
     };
 
     // extracts the next/previous hyperlink from the list of hyperlink ranges provided
-    auto extractResultFromList = [&](std::vector<interval_tree::Interval<til::point, size_t>>& list) {
+    auto extractResultFromList = [&](std::vector<interval_tree::Interval<til::point, size_t>>& list) noexcept {
         const auto selectionStartInSearchArea = convertToSearchArea(_selection->start);
 
         std::optional<std::pair<til::point, til::point>> resultFromList;
@@ -533,7 +533,7 @@ void Terminal::SelectHyperlink(const SearchDirection dir)
     _ScrollToPoint(_selection->end);
 }
 
-Terminal::UpdateSelectionParams Terminal::ConvertKeyEventToUpdateSelectionParams(const ControlKeyStates mods, const WORD vkey) const
+Terminal::UpdateSelectionParams Terminal::ConvertKeyEventToUpdateSelectionParams(const ControlKeyStates mods, const WORD vkey) const noexcept
 {
     if ((_selectionMode == SelectionInteractionMode::Mark || mods.IsShiftPressed()) && !mods.IsAltPressed())
     {