feat: Improve appearance of OOB banner

Rendering at a non-native resolution and then scaling the bitmap
looks bad. The scaling seems to try to just get it to end up the
same size as the welcome screen, so just use the same size for
both.

plugins/builtin/source/content/out_of_box_experience.cpp

@@ -76,7 +76,7 @@ namespace hex::plugin::builtin {
 
                 // Draw banner
                 ImGui::SetCursorPos(scaled({ 25 * bannerSlideIn, 25 }));
-                const auto bannerSize = s_imhexBanner.getSize() / (3.0F * (1.0F / ImHexApi::System::getGlobalScale()));
+                const auto bannerSize = s_imhexBanner.getSize();
                 ImGui::Image(
                     s_imhexBanner,
                     bannerSize,
@@ -443,7 +443,7 @@ namespace hex::plugin::builtin {
 
             const auto imageTheme = ThemeManager::getImageTheme();
             const auto scale = ImHexApi::System::getContentScale();
-            s_imhexBanner    = ImGuiExt::Texture::fromSVG(romfs::get(hex::format("assets/{}/banner.svg", imageTheme)).span<std::byte>(), 0, 0, scale);
+            s_imhexBanner    = ImGuiExt::Texture::fromSVG(romfs::get(hex::format("assets/{}/banner.svg", imageTheme)).span<std::byte>(), 300_scaled, 0, scale);
             s_compassTexture = ImGuiExt::Texture::fromImage(romfs::get("assets/common/compass.png").span<std::byte>());
             s_globeTexture   = ImGuiExt::Texture::fromImage(romfs::get("assets/common/globe.png").span<std::byte>());
             s_screenshotDescriptions = nlohmann::json::parse(romfs::get("assets/screenshot_descriptions.json").string());