Add missing copyright headers

Autoported commit.
Original commit hash: [ad79be0c6]

itext.tests/itext.forms.tests/itext/forms/RectangleIntegrationTest.cs

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+/*
+This file is part of the iText (R) project.
+Copyright (c) 1998-2025 Apryse Group NV
+Authors: Apryse Software.
+
+This program is offered under a commercial and under the AGPL license.
+For commercial licensing, contact us at https://itextpdf.com/sales.  For AGPL licensing, see below.
+
+AGPL licensing:
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 using System;
 using iText.Forms.Fields;
 using iText.Kernel.Geom;

port-hash

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-c072e4ccd471ed3f9820368e1047e989cba4e1c8
+ad79be0c61520ff6f8e32e5115ec31565e3375d7