fix: ensure consistent scaling during wall rendering

SeedQueuePreviewProperties#buildChunks sets RenderSystem#ortho, but since it does it with double precision the result may be slightly off the width and height of SeedQueuePreview, causing flickering
also ceiled width and height to avoid them being 0 when the scale is bigger than the simulated window size

Author: contariaa

src/main/java/me/contaria/seedqueue/gui/wall/SeedQueuePreview.java

@@ -64,8 +64,8 @@ public SeedQueuePreview(SeedQueueWallScreen wall, SeedQueueEntry seedQueueEntry)
                 this.seedQueueEntry.getSettingsCache() != null ? (int) this.seedQueueEntry.getSettingsCache().getValue("guiScale") : MinecraftClient.getInstance().options.guiScale,
                 MinecraftClient.getInstance().options.forceUnicodeFont
         );
-        this.width = SeedQueue.config.simulatedWindowSize.width() / scale;
-        this.height = SeedQueue.config.simulatedWindowSize.height() / scale;
+        this.width = (int) Math.ceil((double) SeedQueue.config.simulatedWindowSize.width() / scale);
+        this.height = (int) Math.ceil((double) SeedQueue.config.simulatedWindowSize.height() / scale);
 
         this.buttons = WorldPreviewProperties.createMenu(this.width, this.height, () -> {}, () -> {});
         this.showMenu = !Boolean.TRUE.equals(SpeedrunConfigAPI.getConfigValue("standardsettings", "autoF3Esc"));
@@ -133,6 +133,7 @@ private void renderPreview(MatrixStack matrices) {
                 this.buildChunks();
             }
         }
+        this.wall.setOrtho(this.width, this.height);
         frameBuffer.draw(this.width, this.height);
     }
 
@@ -147,7 +148,6 @@ private void redrawPreview(MatrixStack matrices, SeedQueuePreviewFrameBuffer fra
 
         this.client.getFramebuffer().beginWrite(false);
         this.wall.refreshViewport();
-        this.wall.setOrtho(this.width, this.height);
         this.lastPreviewFrame = this.wall.frame;
     }